diff --git a/pkgs/development/python-modules/mypy-boto3/default.nix b/pkgs/development/python-modules/mypy-boto3/default.nix
index a878f43f88b8..744c2fe3fd9c 100644
--- a/pkgs/development/python-modules/mypy-boto3/default.nix
+++ b/pkgs/development/python-modules/mypy-boto3/default.nix
@@ -558,8 +558,8 @@ rec {
       "sha256-t1Pj8GSr9XDym/s1qAXaiGSGWEEttDhjBnPrB/L6Lwo=";
 
   mypy-boto3-fsx =
-    buildMypyBoto3Package "fsx" "1.38.0"
-      "sha256-lDGC5LuanclpzeDgrQ9bApm3BFzG3sANnFvchVM48UQ=";
+    buildMypyBoto3Package "fsx" "1.38.26"
+      "sha256-Njes201HxzOKDRwaxXWLp3ZjoRjEi62jYM0y2yvetWY=";
 
   mypy-boto3-gamelift =
     buildMypyBoto3Package "gamelift" "1.38.0"