diff --git a/pkgs/tools/misc/diffoscope/default.nix b/pkgs/tools/misc/diffoscope/default.nix
index bf315e178845..55666e349a0d 100644
--- a/pkgs/tools/misc/diffoscope/default.nix
+++ b/pkgs/tools/misc/diffoscope/default.nix
@@ -94,7 +94,7 @@ let
         {
           inherit version;
           src = src.override {
-            rev = version;
+            tag = version;
             hash = "sha256-ZYEjT/yShfA4+zpbGOtaFOx1nSSOWPtMvskPhHv3c9U=";
           };
         }