diff --git a/pkgs/by-name/co/cosmic-osd/package.nix b/pkgs/by-name/co/cosmic-osd/package.nix
index 10d5475daba8..0d6f6ade81c7 100644
--- a/pkgs/by-name/co/cosmic-osd/package.nix
+++ b/pkgs/by-name/co/cosmic-osd/package.nix
@@ -15,7 +15,7 @@ rustPlatform.buildRustPackage rec {
   src = fetchFromGitHub {
     owner = "pop-os";
     repo = "cosmic-osd";
-    rev = "epoch-${version}";
+    tag = "epoch-${version}";
     hash = "sha256-a5wzCHfp+dhtEkXsJOeEs2ZkmooSWIDGymeAdrXKE+U=";
   };