diff --git a/pkgs/development/python-modules/microdata/default.nix b/pkgs/development/python-modules/microdata/default.nix
index cb3e852900c0..b5d14da3657b 100644
--- a/pkgs/development/python-modules/microdata/default.nix
+++ b/pkgs/development/python-modules/microdata/default.nix
@@ -6,7 +6,7 @@
   unittestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "microdata";
   version = "0.8.0";
   format = "setuptools";
@@ -14,7 +14,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "edsu";
     repo = "microdata";
-    rev = "v${version}";
+    rev = "v${finalAttrs.version}";
     hash = "sha256-BAygCLBLxZ033ZWRFSR52dSM2nPY8jXplDXQ8WW3KPo=";
   };
 
@@ -31,4 +31,4 @@ buildPythonPackage rec {
     license = lib.licenses.cc0;
     maintainers = with lib.maintainers; [ ambroisie ];
   };
-}
+})