diff --git a/pkgs/development/tools/yarn-berry/default.nix b/pkgs/development/tools/yarn-berry/default.nix
index e9ae6ef416a0..d52d6d27e880 100644
--- a/pkgs/development/tools/yarn-berry/default.nix
+++ b/pkgs/development/tools/yarn-berry/default.nix
@@ -39,5 +39,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd2;
     maintainers = with maintainers; [ ryota-ka thehedgeh0g ];
     platforms = platforms.unix;
+    mainProgram = "yarn";
   };
 }