diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index e0d2a35e4d0d..da76ef238168 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -386,8 +386,8 @@ rec {
       "sha256-I5xvx5UCp1h2H1c2xI6mSI4ZaXsONs/09/BJfRXCr3A=";
 
   mypy-boto3-dax =
-    buildMypyBoto3Package "dax" "1.40.17"
-      "sha256-LjLWri3u0r973OARtntun5k18oNnKp2vUrEV8mkidbA=";
+    buildMypyBoto3Package "dax" "1.40.38"
+      "sha256-jzNdzI1E16m8/5XdD4nKVfyYFbisU5Kc59+0Ei+cnDo=";
 
   mypy-boto3-detective =
     buildMypyBoto3Package "detective" "1.40.14"