diff --git a/pkgs/by-name/ci/cider-2/updater.sh b/pkgs/by-name/ci/cider-2/updater.sh
index 20ab34f37465..6c0166806e4c 100755
--- a/pkgs/by-name/ci/cider-2/updater.sh
+++ b/pkgs/by-name/ci/cider-2/updater.sh
@@ -29,7 +29,7 @@ fi
 cd ../../../..
 
 if [[ "${1-default}" != "--deps-only" ]]; then
-    SHA="$(nix-prefetch-url --quiet --unpack --type sha256 $DEB_URL)"
+    SHA="$(nix-prefetch-url --quiet --type sha256 $DEB_URL)"
     SRI=$(nix --experimental-features nix-command hash to-sri "sha256:$SHA")
     update-source-version cider-2 "$NEW_VERSION" "$SRI"
 fi