diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 14894d9bbd56..dc80e7955964 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -90,8 +90,8 @@ rec {
       "sha256-ol6Gj+NsSOK3hInNvwLTDfWIpfD6tuSVyH52c6UhSNI=";
 
   mypy-boto3-appconfig =
-    buildMypyBoto3Package "appconfig" "1.38.0"
-      "sha256-oyrJXkXHRvSRKGxS5MtSvhKqXWGJ+2gGJMDkIyObL+I=";
+    buildMypyBoto3Package "appconfig" "1.38.7"
+      "sha256-V3UPvnKMl945aK+3gH9UrOs/DGx8Aiy/nuHtwu9N4z4=";
 
   mypy-boto3-appconfigdata =
     buildMypyBoto3Package "appconfigdata" "1.38.0"