diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 7080aefd2c9d..e0d2a35e4d0d 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -258,8 +258,8 @@ rec {
       "sha256-ghgArlI9Z/rk9kM6k6b+0x/Fugp7q25+uV+Y2dZFtSU=";
 
   mypy-boto3-cloudwatch =
-    buildMypyBoto3Package "cloudwatch" "1.40.27"
-      "sha256-81COvDAaq4MASZCpALSWhT9WTdTf0LgurwY44MPs0mc=";
+    buildMypyBoto3Package "cloudwatch" "1.40.38"
+      "sha256-JCKTfyeEvYsw8b2EOGJVh+Y6lgpzMFecj2y35o3K9Mo=";
 
   mypy-boto3-codeartifact =
     buildMypyBoto3Package "codeartifact" "1.40.17"