diff --git a/pkgs/development/python-modules/aiopyarr/default.nix b/pkgs/development/python-modules/aiopyarr/default.nix
index c728da8b5528..65ce5e4adbbf 100644
--- a/pkgs/development/python-modules/aiopyarr/default.nix
+++ b/pkgs/development/python-modules/aiopyarr/default.nix
@@ -24,6 +24,11 @@ buildPythonPackage rec {
     hash = "sha256-8/ixL4ByaBYoPbB4g+Rgx+5OM6vjrFTUEPR42wBKyyg=";
   };
 
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace 'version="master"' 'version="${version}"'
+  '';
+
   propagatedBuildInputs = [
     aiohttp
     ciso8601