diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 82520dd560de..1451c9853ac0 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -134,8 +134,8 @@ rec {
       "sha256-5rsHt8WPBvbXMsqvw2ccOCaSzEE7dlzTre+qhXjQV3g=";
 
   mypy-boto3-appsync =
-    buildMypyBoto3Package "appsync" "1.35.77"
-      "sha256-DmwHwbpBnxzyJnxAVqptfH9ZBD1HweVZJaDhNefTaGg=";
+    buildMypyBoto3Package "appsync" "1.35.91"
+      "sha256-LMYIrTdXgawatXvXQdcay4ltNhBnnRnJopma86QrdlQ=";
 
   mypy-boto3-arc-zonal-shift =
     buildMypyBoto3Package "arc-zonal-shift" "1.35.0"