diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 2f44dec64a8b..c3d97b8e6783 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -303,8 +303,8 @@ in
       "sha256-RRk2nw7TiXH6ktFN96roZ+XS/iu1F6nmqNM9rPZkccM=";
 
   mypy-boto3-codestar-notifications =
-    buildMypyBoto3Package "codestar-notifications" "1.42.3"
-      "sha256-/Do27W8Ye71TMnvS9cihH+NgyuhbYjnQZlRy5IhZPyE=";
+    buildMypyBoto3Package "codestar-notifications" "1.43.0"
+      "sha256-QIdgZzTxbWIotkfHQCUxc7SVrKUReLJD1Fs+R+97Is4=";
 
   mypy-boto3-cognito-identity =
     buildMypyBoto3Package "cognito-identity" "1.42.3"