diff --git a/CHANGELOG.md b/CHANGELOG.md
index a79ce39..836113e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## 0.4.1
+
+### Changed
+
+- Support only version 1.0 of async-aws/core
+
 ## 0.4.0
 
 ### Changed
diff --git a/composer.json b/composer.json
index cbe67ae..1a6e7a2 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     "require": {
         "php": "^7.2.5",
         "ext-json": "*",
-        "async-aws/core": "^0.5"
+        "async-aws/core": "^1.0"
     },
     "extra": {
         "branch-alias": {