diff --git a/CHANGELOG.md b/CHANGELOG.md
index c7835dc7dd..72d22c6345 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.15.4](https://github.com/googleapis/gapic-generator-java/compare/v2.15.3...v2.15.4) (2023-03-20)
+
+
+### Dependencies
+
+* Update netty dependencies to v4.1.90.final ([#1490](https://github.com/googleapis/gapic-generator-java/issues/1490)) ([894ba37](https://github.com/googleapis/gapic-generator-java/commit/894ba379201fe1fa8afe80ad58d17b69554b82d5))
+
 ## [2.15.3](https://github.com/googleapis/gapic-generator-java/compare/v2.15.2...v2.15.3) (2023-03-14)
 
 
diff --git a/WORKSPACE b/WORKSPACE
index faf2e7eac2..b4fe982842 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -60,7 +60,7 @@ maven_install(
     repositories = ["https://repo.maven.apache.org/maven2/"],
 )
 
-_gapic_generator_java_version = "2.15.4-SNAPSHOT"  # {x-version-update:gapic-generator-java:current}
+_gapic_generator_java_version = "2.15.4"  # {x-version-update:gapic-generator-java:current}
 
 maven_install(
     artifacts = [
diff --git a/api-common-java/pom.xml b/api-common-java/pom.xml
index 97be116b9b..e31187edea 100644
--- a/api-common-java/pom.xml
+++ b/api-common-java/pom.xml
@@ -5,14 +5,14 @@
     <groupId>com.google.api</groupId>
     <artifactId>api-common</artifactId>
     <packaging>jar</packaging>
-    <version>2.6.4-SNAPSHOT</version><!-- {x-version-update:api-common:current} -->
+    <version>2.6.4</version><!-- {x-version-update:api-common:current} -->
     <name>API Common</name>
     <description>Common utilities for Google APIs in Java</description>
 
     <parent>
         <groupId>com.google.api</groupId>
         <artifactId>gapic-generator-java-pom-parent</artifactId>
-        <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+        <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
         <relativePath>../gapic-generator-java-pom-parent</relativePath>
     </parent>
 
diff --git a/coverage-report/pom.xml b/coverage-report/pom.xml
index 7851a2aa7f..a8f323176b 100644
--- a/coverage-report/pom.xml
+++ b/coverage-report/pom.xml
@@ -32,17 +32,17 @@
             <dependency>
                 <groupId>com.google.api</groupId>
                 <artifactId>gax</artifactId>
-                <version>2.23.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+                <version>2.23.4</version> <!-- {x-version-update:gax:current} -->
             </dependency>
             <dependency>
                 <groupId>com.google.api</groupId>
                 <artifactId>gax-grpc</artifactId>
-                <version>2.23.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+                <version>2.23.4</version> <!-- {x-version-update:gax:current} -->
             </dependency>
             <dependency>
                 <groupId>com.google.api</groupId>
                 <artifactId>gax-httpjson</artifactId>
-                <version>0.108.3-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+                <version>2.23.4</version> <!-- {x-version-update:gax:current} -->
             </dependency>
         </dependencies>
 
diff --git a/gapic-generator-java-bom/pom.xml b/gapic-generator-java-bom/pom.xml
index e4f00addf8..6bace7ea99 100644
--- a/gapic-generator-java-bom/pom.xml
+++ b/gapic-generator-java-bom/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.api</groupId>
   <artifactId>gapic-generator-java-bom</artifactId>
   <packaging>pom</packaging>
-  <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+  <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
   <name>GAPIC Generator Java BOM</name>
   <description>
     BOM for the libraries in gapic-generator-java repository. Users should not
@@ -15,7 +15,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-pom-parent</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-pom-parent</relativePath>
   </parent>
 
@@ -60,56 +60,56 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>api-common</artifactId>
-        <version>2.6.4-SNAPSHOT</version><!-- {x-version-update:api-common:current} -->
+        <version>2.6.4</version><!-- {x-version-update:api-common:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-bom</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax:current} -->
         <type>pom</type>
         <scope>import</scope>
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v1</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v2</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v2beta</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
       </dependency>
 
       <!-- Following test deps are kept to keep them consistent with versions above -->
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v1</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v1:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v2</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v2beta</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
       </dependency>
     </dependencies>
 
diff --git a/gapic-generator-java-pom-parent/pom.xml b/gapic-generator-java-pom-parent/pom.xml
index 1c7a9ce31d..4692192822 100644
--- a/gapic-generator-java-pom-parent/pom.xml
+++ b/gapic-generator-java-pom-parent/pom.xml
@@ -5,7 +5,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api</groupId>
   <artifactId>gapic-generator-java-pom-parent</artifactId>
-  <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+  <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
   <packaging>pom</packaging>
   <name>GAPIC Generator Java POM Parent</name>
   <url>https://github.com/googleapis/gapic-generator-java</url>
diff --git a/gapic-generator-java/pom.xml b/gapic-generator-java/pom.xml
index 1369a3a310..a18db19540 100644
--- a/gapic-generator-java/pom.xml
+++ b/gapic-generator-java/pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api</groupId>
   <artifactId>gapic-generator-java</artifactId>
-  <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+  <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
   <name>GAPIC Generator Java</name>
   <description>GAPIC generator Java</description>
 
@@ -23,7 +23,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-pom-parent</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-pom-parent</relativePath>
   </parent>
 
@@ -32,7 +32,7 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gapic-generator-java-bom</artifactId>
-        <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+        <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
         <type>pom</type>
         <scope>import</scope>
       </dependency>
diff --git a/gax-java/dependencies.properties b/gax-java/dependencies.properties
index c69108447e..16df33f64b 100644
--- a/gax-java/dependencies.properties
+++ b/gax-java/dependencies.properties
@@ -8,16 +8,16 @@
 
 # Versions of oneself
 # {x-version-update-start:gax:current}
-version.gax=2.23.4-SNAPSHOT
+version.gax=2.23.4
 # {x-version-update-end}
 # {x-version-update-start:gax:current}
-version.gax_grpc=2.23.4-SNAPSHOT
+version.gax_grpc=2.23.4
 # {x-version-update-end}
 # {x-version-update-start:gax:current}
-version.gax_bom=2.23.4-SNAPSHOT
+version.gax_bom=2.23.4
 # {x-version-update-end}
 # {x-version-update-start:gax-httpjson:current}
-version.gax_httpjson=0.108.4-SNAPSHOT
+version.gax_httpjson=0.108.4
 # {x-version-update-end}
 
 # Versions for dependencies which actual artifacts differ between Bazel and Gradle.
diff --git a/gax-java/gax-bom/pom.xml b/gax-java/gax-bom/pom.xml
index 4fcc11d662..9e0ad42b32 100644
--- a/gax-java/gax-bom/pom.xml
+++ b/gax-java/gax-bom/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api</groupId>
   <artifactId>gax-bom</artifactId>
-  <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+  <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   <packaging>pom</packaging>
   <name>GAX (Google Api eXtensions) for Java (BOM)</name>
   <description>Google Api eXtensions for Java (BOM)</description>
@@ -43,55 +43,55 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax:current} -->
         <type>test-jar</type>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax:current} -->
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-grpc</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax-grpc:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax-grpc:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-grpc</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax-grpc:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax-grpc:current} -->
         <type>test-jar</type>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-grpc</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax-grpc:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax-grpc:current} -->
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-httpjson</artifactId>
-        <version>0.108.4-SNAPSHOT</version><!-- {x-version-update:gax-httpjson:current} -->
+        <version>0.108.4</version><!-- {x-version-update:gax-httpjson:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-httpjson</artifactId>
-        <version>0.108.4-SNAPSHOT</version><!-- {x-version-update:gax-httpjson:current} -->
+        <version>0.108.4</version><!-- {x-version-update:gax-httpjson:current} -->
         <type>test-jar</type>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-httpjson</artifactId>
-        <version>0.108.4-SNAPSHOT</version><!-- {x-version-update:gax-httpjson:current} -->
+        <version>0.108.4</version><!-- {x-version-update:gax-httpjson:current} -->
         <classifier>testlib</classifier>
       </dependency>
     </dependencies>
diff --git a/gax-java/gax-grpc/pom.xml b/gax-java/gax-grpc/pom.xml
index 5a53f9e810..5b931cec38 100644
--- a/gax-java/gax-grpc/pom.xml
+++ b/gax-java/gax-grpc/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>gax-grpc</artifactId>
-  <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax-grpc:current} -->
+  <version>2.23.4</version><!-- {x-version-update:gax-grpc:current} -->
   <packaging>jar</packaging>
   <name>GAX (Google Api eXtensions) for Java (gRPC)</name>
   <description>Google Api eXtensions for Java (gRPC)</description>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gax-parent</artifactId>
-    <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+    <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   </parent>
 
   <dependencies>
diff --git a/gax-java/gax-httpjson/pom.xml b/gax-java/gax-httpjson/pom.xml
index 32a9a56b83..7f5690d822 100644
--- a/gax-java/gax-httpjson/pom.xml
+++ b/gax-java/gax-httpjson/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>gax-httpjson</artifactId>
-  <version>0.108.4-SNAPSHOT</version> <!-- {x-version-update:gax-httpjson:current} -->
+  <version>0.108.4</version> <!-- {x-version-update:gax-httpjson:current} -->
   <packaging>jar</packaging>
   <name>GAX (Google Api eXtensions) for Java (HTTP JSON)</name>
   <description>Google Api eXtensions for Java (HTTP JSON)</description>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gax-parent</artifactId>
-    <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+    <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   </parent>
 
   <properties>
diff --git a/gax-java/gax/pom.xml b/gax-java/gax/pom.xml
index d3d2056fc1..c0e098cbbb 100644
--- a/gax-java/gax/pom.xml
+++ b/gax-java/gax/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
 
   <artifactId>gax</artifactId>
-  <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+  <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   <packaging>jar</packaging>
   <name>GAX (Google Api eXtensions) for Java (Core)</name>
   <description>Google Api eXtensions for Java (Core)</description>
@@ -11,7 +11,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gax-parent</artifactId>
-    <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+    <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   </parent>
 
   <dependencies>
diff --git a/gax-java/pom.xml b/gax-java/pom.xml
index 627865fb4c..edd2ad17b1 100644
--- a/gax-java/pom.xml
+++ b/gax-java/pom.xml
@@ -4,14 +4,14 @@
   <groupId>com.google.api</groupId>
   <artifactId>gax-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+  <version>2.23.4</version><!-- {x-version-update:gax:current} -->
   <name>GAX (Google Api eXtensions) for Java (Parent)</name>
   <description>Google Api eXtensions for Java (Parent)</description>
 
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-pom-parent</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-pom-parent</relativePath>
   </parent>
 
@@ -51,7 +51,7 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>api-common</artifactId>
-        <version>2.6.4-SNAPSHOT</version><!-- {x-version-update:api-common:current} -->
+        <version>2.6.4</version><!-- {x-version-update:api-common:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.auth</groupId>
@@ -109,24 +109,24 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>2.23.4-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version> <!-- {x-version-update:gax:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax</artifactId>
-        <version>2.23.4-SNAPSHOT</version> <!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version> <!-- {x-version-update:gax:current} -->
         <type>test-jar</type>
         <classifier>testlib</classifier>
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:grpc-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>io.grpc</groupId>
diff --git a/java-common-protos/grpc-google-common-protos/pom.xml b/java-common-protos/grpc-google-common-protos/pom.xml
index ae53930119..18413a9c66 100644
--- a/java-common-protos/grpc-google-common-protos/pom.xml
+++ b/java-common-protos/grpc-google-common-protos/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-common-protos</artifactId>
-  <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>grpc-google-common-protos</name>
   <description>GRPC library for grpc-google-common-protos</description>
   <parent>
     <groupId>com.google.api.grpc</groupId>
     <artifactId>google-common-protos-parent</artifactId>
-    <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+    <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-common-protos/pom.xml b/java-common-protos/pom.xml
index 4b4a8661db..7dbac4ccba 100644
--- a/java-common-protos/pom.xml
+++ b/java-common-protos/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.api.grpc</groupId>
   <artifactId>google-common-protos-parent</artifactId>
   <packaging>pom</packaging>
-  <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>Google Common Protos Parent</name>
   <description>
     Java idiomatic client for Google Cloud Platform services.
@@ -13,7 +13,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-pom-parent</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-pom-parent</relativePath>
   </parent>
 
@@ -69,7 +69,7 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:grpc-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>io.grpc</groupId>
@@ -81,7 +81,7 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.guava</groupId>
diff --git a/java-common-protos/proto-google-common-protos/pom.xml b/java-common-protos/proto-google-common-protos/pom.xml
index 7c2fe4eaa4..5f57c4a2a8 100644
--- a/java-common-protos/proto-google-common-protos/pom.xml
+++ b/java-common-protos/proto-google-common-protos/pom.xml
@@ -3,13 +3,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-common-protos</artifactId>
-  <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+  <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
   <name>proto-google-common-protos</name>
   <description>PROTO library for proto-google-common-protos</description>
   <parent>
     <groupId>com.google.api.grpc</groupId>
     <artifactId>google-common-protos-parent</artifactId>
-    <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+    <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/grpc-google-iam-v1/pom.xml b/java-iam/grpc-google-iam-v1/pom.xml
index 8bdc09ef1d..be0311ccf4 100644
--- a/java-iam/grpc-google-iam-v1/pom.xml
+++ b/java-iam/grpc-google-iam-v1/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-iam-v1</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+  <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   <name>grpc-google-iam-v1</name>
   <description>GRPC library for grpc-google-iam-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/grpc-google-iam-v2/pom.xml b/java-iam/grpc-google-iam-v2/pom.xml
index 84d292d9da..2ec54d9cbf 100644
--- a/java-iam/grpc-google-iam-v2/pom.xml
+++ b/java-iam/grpc-google-iam-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-iam-v2</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
+  <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
   <name>grpc-google-iam-v2</name>
   <description>GRPC library for proto-google-iam-v2</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/grpc-google-iam-v2beta/pom.xml b/java-iam/grpc-google-iam-v2beta/pom.xml
index 2792bf9c0e..9083333074 100644
--- a/java-iam/grpc-google-iam-v2beta/pom.xml
+++ b/java-iam/grpc-google-iam-v2beta/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>grpc-google-iam-v2beta</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
+  <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
   <name>grpc-google-iam-v2beta</name>
   <description>GRPC library for proto-google-iam-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/pom.xml b/java-iam/pom.xml
index 4d43b05cb9..03113fa3aa 100644
--- a/java-iam/pom.xml
+++ b/java-iam/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.cloud</groupId>
   <artifactId>google-iam-parent</artifactId>
   <packaging>pom</packaging>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+  <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   <name>Google IAM Parent</name>
   <description>
     Java idiomatic client for Google Cloud Platform services.
@@ -13,7 +13,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-pom-parent</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-pom-parent</relativePath>
   </parent>
 
@@ -81,49 +81,49 @@
       <dependency>
         <groupId>com.google.api</groupId>
         <artifactId>gax-bom</artifactId>
-        <version>2.23.4-SNAPSHOT</version><!-- {x-version-update:gax:current} -->
+        <version>2.23.4</version><!-- {x-version-update:gax:current} -->
         <type>pom</type>
         <scope>import</scope>
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v2</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v2</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-iam-policy</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:google-iam-policy:current} -->
+        <version>1.9.4</version><!-- {x-version-update:google-iam-policy:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-common-protos</artifactId>
-        <version>2.14.4-SNAPSHOT</version><!-- {x-version-update:proto-google-common-protos:current} -->
+        <version>2.14.4</version><!-- {x-version-update:proto-google-common-protos:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v2beta</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v1</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v1:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-iam-v2beta</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
+        <version>1.9.4</version><!-- {x-version-update:grpc-google-iam-v2beta:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>proto-google-iam-v1</artifactId>
-        <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+        <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
       </dependency>
       <dependency>
         <groupId>javax.annotation</groupId>
diff --git a/java-iam/proto-google-iam-v1/pom.xml b/java-iam/proto-google-iam-v1/pom.xml
index 5c590c2388..7eb4180c9c 100644
--- a/java-iam/proto-google-iam-v1/pom.xml
+++ b/java-iam/proto-google-iam-v1/pom.xml
@@ -3,13 +3,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-iam-v1</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+  <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   <name>proto-google-iam-v1</name>
   <description>PROTO library for proto-google-iam-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/proto-google-iam-v2/pom.xml b/java-iam/proto-google-iam-v2/pom.xml
index c041c60829..90be2f8ade 100644
--- a/java-iam/proto-google-iam-v2/pom.xml
+++ b/java-iam/proto-google-iam-v2/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-iam-v2</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2:current} -->
+  <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2:current} -->
   <name>proto-google-iam-v2</name>
   <description>Proto library for proto-google-iam-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/java-iam/proto-google-iam-v2beta/pom.xml b/java-iam/proto-google-iam-v2beta/pom.xml
index a885c86e34..785ed3a734 100644
--- a/java-iam/proto-google-iam-v2beta/pom.xml
+++ b/java-iam/proto-google-iam-v2beta/pom.xml
@@ -4,13 +4,13 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api.grpc</groupId>
   <artifactId>proto-google-iam-v2beta</artifactId>
-  <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
+  <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v2beta:current} -->
   <name>proto-google-iam-v2beta</name>
   <description>Proto library for proto-google-iam-v1</description>
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-iam-parent</artifactId>
-    <version>1.9.4-SNAPSHOT</version><!-- {x-version-update:proto-google-iam-v1:current} -->
+    <version>1.9.4</version><!-- {x-version-update:proto-google-iam-v1:current} -->
   </parent>
   <dependencies>
     <dependency>
diff --git a/showcase/pom.xml b/showcase/pom.xml
index d36599a873..07091eef61 100644
--- a/showcase/pom.xml
+++ b/showcase/pom.xml
@@ -15,7 +15,7 @@
   <parent>
     <groupId>com.google.api</groupId>
     <artifactId>gapic-generator-java-bom</artifactId>
-    <version>2.15.4-SNAPSHOT</version><!-- {x-version-update:gapic-generator-java:current} -->
+    <version>2.15.4</version><!-- {x-version-update:gapic-generator-java:current} -->
     <relativePath>../gapic-generator-java-bom</relativePath>
   </parent>
 
diff --git a/versions.txt b/versions.txt
index 4e0bf307c2..ab53fefdce 100644
--- a/versions.txt
+++ b/versions.txt
@@ -1,17 +1,17 @@
 # Format:
 # module:released-version:current-version
 
-gapic-generator-java:2.15.3:2.15.4-SNAPSHOT
-api-common:2.6.3:2.6.4-SNAPSHOT
-gax:2.23.3:2.23.4-SNAPSHOT
-gax-grpc:2.23.3:2.23.4-SNAPSHOT
-gax-httpjson:0.108.3:0.108.4-SNAPSHOT
-proto-google-common-protos:2.14.3:2.14.4-SNAPSHOT
-grpc-google-common-protos:2.14.3:2.14.4-SNAPSHOT
-proto-google-iam-v1:1.9.3:1.9.4-SNAPSHOT
-grpc-google-iam-v1:1.9.3:1.9.4-SNAPSHOT
-proto-google-iam-v2beta:1.9.3:1.9.4-SNAPSHOT
-grpc-google-iam-v2beta:1.9.3:1.9.4-SNAPSHOT
-google-iam-policy:1.9.3:1.9.4-SNAPSHOT
-proto-google-iam-v2:1.9.3:1.9.4-SNAPSHOT
-grpc-google-iam-v2:1.9.3:1.9.4-SNAPSHOT
+gapic-generator-java:2.15.4:2.15.4
+api-common:2.6.4:2.6.4
+gax:2.23.4:2.23.4
+gax-grpc:2.23.4:2.23.4
+gax-httpjson:0.108.4:0.108.4
+proto-google-common-protos:2.14.4:2.14.4
+grpc-google-common-protos:2.14.4:2.14.4
+proto-google-iam-v1:1.9.4:1.9.4
+grpc-google-iam-v1:1.9.4:1.9.4
+proto-google-iam-v2beta:1.9.4:1.9.4
+grpc-google-iam-v2beta:1.9.4:1.9.4
+google-iam-policy:1.9.4:1.9.4
+proto-google-iam-v2:1.9.4:1.9.4
+grpc-google-iam-v2:1.9.4:1.9.4