diff --git a/pkgs/by-name/gp/gpredict/package.nix b/pkgs/by-name/gp/gpredict/package.nix
index 26480eb9a0d1..608bd4c3f844 100644
--- a/pkgs/by-name/gp/gpredict/package.nix
+++ b/pkgs/by-name/gp/gpredict/package.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchFromGitHub {
     owner = "csete";
     repo = "gpredict";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-+hgjImfT3nWMBYwde7+KC/hzd84pwQbpoJvaJSNG4E8=";
   };