diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 8e5a54db54cc..cd60c65de5ce 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -431,8 +431,8 @@ in
       "sha256-VLjmuBf9xHv0qwv2F3l/14KptFqXVE0OmwPF/WC06NI=";
 
   mypy-boto3-dynamodb =
-    buildMypyBoto3Package "dynamodb" "1.42.55"
-      "sha256-pEX0Oba8RTL9WSy39EREyPyPOXJxwNkIfnEvcfGW0vk=";
+    buildMypyBoto3Package "dynamodb" "1.42.73"
+      "sha256-P9ngk6jJgqU9VfasPRCdiZV/6Ctcfs5l8nt3Ltelyps=";
 
   mypy-boto3-dynamodbstreams =
     buildMypyBoto3Package "dynamodbstreams" "1.42.3"