diff --git a/pkgs/development/python-modules/pyads/default.nix b/pkgs/development/python-modules/pyads/default.nix
index bdedb2392af7..8793565c90c9 100644
--- a/pkgs/development/python-modules/pyads/default.nix
+++ b/pkgs/development/python-modules/pyads/default.nix
@@ -8,7 +8,7 @@
 
 buildPythonPackage rec {
   pname = "pyads";
-  version = "3.3.9";
+  version = "3.4.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -16,8 +16,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "stlehmann";
     repo = pname;
-    rev = version;
-    hash = "sha256-eNouFJQDgp56fgkA7wZKfosKWOKU6OvXRjFwjCMvZqI=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-HJ/dlRuwFSY5j/mAp6rLMlTV59GFwrTV27n73TWlCUo=";
   };
 
   buildInputs = [