diff --git a/pkgs/by-name/cp/cpptrace/package.nix b/pkgs/by-name/cp/cpptrace/package.nix
index 2936bee7953c..f7c7685421a8 100644
--- a/pkgs/by-name/cp/cpptrace/package.nix
+++ b/pkgs/by-name/cp/cpptrace/package.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchFromGitHub {
     owner = "jeremy-rifkin";
     repo = "cpptrace";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-zjPxPtq+OQ104sJoeBD3jpMV9gV57FSHEJS4W6SF8GM=";
   };