diff --git a/pkgs/by-name/ei/eid-mw/package.nix b/pkgs/by-name/ei/eid-mw/package.nix
index 1cf570ca6437..840d4c262466 100644
--- a/pkgs/by-name/ei/eid-mw/package.nix
+++ b/pkgs/by-name/ei/eid-mw/package.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "Fedict";
     repo = "eid-mw";
-    rev = "v${version}";
+    tag = "v${version}";
     hash = "sha256-LdOfwgRGyNK+a4SByClPgH9SrDeCdnhI9sLO7agsNsA=";
   };