diff --git a/build.gradle.kts b/build.gradle.kts
index 5dd4d161..01c4fe42 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -18,7 +18,7 @@ allprojects {
 }
 subprojects {
     group = "com.github.cs125-illinois.jeed"
-    version = "2021.8.3"
+    version = "2021.9.0"
     tasks.withType<Test> {
         useJUnitPlatform()
         enableAssertions = true
diff --git a/containerrunner/src/main/resources/edu.illinois.cs.cs125.jeed.containerrunner.version b/containerrunner/src/main/resources/edu.illinois.cs.cs125.jeed.containerrunner.version
index 9338e69c..7e6c0502 100644
--- a/containerrunner/src/main/resources/edu.illinois.cs.cs125.jeed.containerrunner.version
+++ b/containerrunner/src/main/resources/edu.illinois.cs.cs125.jeed.containerrunner.version
@@ -1 +1 @@
-version=2021.8.3
\ No newline at end of file
+version=2021.9.0
\ No newline at end of file
diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index efbb4409..9b9e3d82 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -20,7 +20,7 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-reflect:1.5.30")
 
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1-native-mt")
-    implementation("com.puppycrawl.tools:checkstyle:8.45.1")
+    implementation("com.puppycrawl.tools:checkstyle:9.0")
     implementation("com.pinterest.ktlint:ktlint-core:0.42.1")
     implementation("com.pinterest.ktlint:ktlint-ruleset-standard:0.42.1")
     implementation("com.github.jknack:handlebars:4.2.0")
diff --git a/core/src/main/resources/edu.illinois.cs.cs125.jeed.core.version b/core/src/main/resources/edu.illinois.cs.cs125.jeed.core.version
index 9338e69c..7e6c0502 100644
--- a/core/src/main/resources/edu.illinois.cs.cs125.jeed.core.version
+++ b/core/src/main/resources/edu.illinois.cs.cs125.jeed.core.version
@@ -1 +1 @@
-version=2021.8.3
\ No newline at end of file
+version=2021.9.0
\ No newline at end of file
diff --git a/server/build.gradle.kts b/server/build.gradle.kts
index 259f971c..80c15b3a 100644
--- a/server/build.gradle.kts
+++ b/server/build.gradle.kts
@@ -19,7 +19,7 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-reflect:1.5.30")
 
     implementation("io.ktor:ktor-server-netty:1.6.3")
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1-native-mt")
     implementation("com.squareup.moshi:moshi-kotlin-codegen:1.12.0")
     implementation("com.github.cs125-illinois:ktor-moshi:1.0.3")
     implementation("ch.qos.logback:logback-classic:1.2.5")
@@ -85,4 +85,9 @@ publishing {
 kotlin {
     kotlinDaemonJvmArgs = listOf("-Dfile.encoding=UTF-8", "--illegal-access=permit")
 }
+kapt {
+    javacOptions {
+        option("--illegal-access", "permit")
+    }
+}
 
diff --git a/server/src/main/resources/edu.illinois.cs.cs125.jeed.server.version b/server/src/main/resources/edu.illinois.cs.cs125.jeed.server.version
index 9338e69c..7e6c0502 100644
--- a/server/src/main/resources/edu.illinois.cs.cs125.jeed.server.version
+++ b/server/src/main/resources/edu.illinois.cs.cs125.jeed.server.version
@@ -1 +1 @@
-version=2021.8.3
\ No newline at end of file
+version=2021.9.0
\ No newline at end of file