diff --git a/pkgs/shells/fish/plugins/sponge.nix b/pkgs/shells/fish/plugins/sponge.nix
index 2afc3ec61585..8528452e783b 100644
--- a/pkgs/shells/fish/plugins/sponge.nix
+++ b/pkgs/shells/fish/plugins/sponge.nix
@@ -7,7 +7,7 @@ buildFishPlugin rec {
   src = fetchFromGitHub {
     owner = "meaningful-ooo";
     repo = pname;
-    rev = "${version}";
+    rev = version;
     sha256 = "sha256-MdcZUDRtNJdiyo2l9o5ma7nAX84xEJbGFhAVhK+Zm1w=";
   };