diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 9346e6b335db..55de40e60ba7 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -306,8 +306,8 @@ in
       "sha256-NNVGx+fN0apfT84GbtQjK6YX30bIomIPUaK9RFOsrVQ=";
 
   mypy-boto3-codestar-notifications =
-    buildMypyBoto3Package "codestar-notifications" "1.40.17"
-      "sha256-uzTn5MwCM6dkY5P9/tLfZqOfdKVvBClMxMkG9vgnx/4=";
+    buildMypyBoto3Package "codestar-notifications" "1.40.55"
+      "sha256-MWnreUSpk4QdquRu1X4/HL9imPSYgl4fJz1BxJvcyPk=";
 
   mypy-boto3-cognito-identity =
     buildMypyBoto3Package "cognito-identity" "1.40.15"