diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 74fc40d19ef0..c6e4f2b69fd7 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -758,8 +758,8 @@ in
       "sha256-SjI/irHvvEjhPyjQcEf1VAWM80ZLH76EFs/1JFDuTi4=";
 
   mypy-boto3-kms =
-    buildMypyBoto3Package "kms" "1.43.0"
-      "sha256-x7burzJDYflPJr+SFtUMjL1DJ0qwRHe1GL79TCZBWDg=";
+    buildMypyBoto3Package "kms" "1.43.12"
+      "sha256-pNI/AYQip5vEqIZnb2PrpUipiwb13NA5XkJNfEcus0A=";
 
   mypy-boto3-lakeformation =
     buildMypyBoto3Package "lakeformation" "1.43.0"