diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index fdc88a2cae91..1b61774bcc6f 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -334,8 +334,8 @@ in
       "sha256-M8vUOtM7Q5gnwi9ZPGu6n+I4Twl02Su4eRGqq2+Ow1o=";
 
   mypy-boto3-config =
-    buildMypyBoto3Package "config" "1.41.0"
-      "sha256-sQf9PZa1RxwsUx7iYT5Ynp7mH8yPTKsWUhAkGdcXIBs=";
+    buildMypyBoto3Package "config" "1.42.3"
+      "sha256-imDBFBMNm8LdlHf9m21aS39DGfF0dbpd7DsZ8fMzIyM=";
 
   mypy-boto3-connect =
     buildMypyBoto3Package "connect" "1.41.2"