diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 095a57e47d15..46e939c8aa23 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -434,8 +434,8 @@ rec {
       "sha256-GZGTzkx/DzyV2IxrAF/8VM+O0Pl4U+hXiXpbWCT+oho=";
 
   mypy-boto3-dynamodb =
-    buildMypyBoto3Package "dynamodb" "1.38.2"
-      "sha256-1/Vnt7O2a01EPFFSGVph0of+xC+mC8ethuPFVEdBgK4=";
+    buildMypyBoto3Package "dynamodb" "1.38.4"
+      "sha256-XPN4djHjErPXX4mmy7vUrXhqdvXVZa8CP+vwP78jwLU=";
 
   mypy-boto3-dynamodbstreams =
     buildMypyBoto3Package "dynamodbstreams" "1.38.0"