diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index 57c38c20a783..04adbb7e0bfc 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -1398,8 +1398,8 @@ rec {
       "sha256-ndTROc1T2APmQHL7EsSeU3XxWPYzp1e32tzqe4UDs/8=";
 
   mypy-boto3-wafv2 =
-    buildMypyBoto3Package "wafv2" "1.38.0"
-      "sha256-j50nk+lk4EaSjKHQ94ZWz0euxQSubBx3pTRSRObxBtc=";
+    buildMypyBoto3Package "wafv2" "1.38.31"
+      "sha256-mWZAUafk2fNj9Se9q06vAKSswzLFqeqnt7e5mncqhdM=";
 
   mypy-boto3-wellarchitected =
     buildMypyBoto3Package "wellarchitected" "1.38.0"