diff --git a/setup b/setup
index f71f4552..1611a454 100755
--- a/setup
+++ b/setup
@@ -208,7 +208,7 @@ if [ "$NEEDS_BUILD" -eq 1 ]; then
   log "Building browse binary..."
   (
     cd "$SOURCE_GSTACK_DIR"
-    bun install
+    bun install --frozen-lockfile 2>/dev/null || bun install
     bun run build
   )
   # Safety net: write .version if build script didn't (e.g., git not available during build)