diff --git a/pkgs/by-name/pe/perses/update.sh b/pkgs/by-name/pe/perses/update.sh
index 092727655033..68e4ec1fc08b 100755
--- a/pkgs/by-name/pe/perses/update.sh
+++ b/pkgs/by-name/pe/perses/update.sh
@@ -3,7 +3,7 @@
 
 set -euo pipefail
 
-nix-update "${UPDATE_NIX_ATTR_PATH}" --version=unstable
+nix-update "${UPDATE_NIX_ATTR_PATH}"
 
 src="$(nix-build -A "${UPDATE_NIX_ATTR_PATH}".src --no-out-link)"