diff --git a/scripts/dev-install.sh b/scripts/dev-install.sh
index 41d9f38f..5d468d06 100755
--- a/scripts/dev-install.sh
+++ b/scripts/dev-install.sh
@@ -90,6 +90,9 @@ echo "[i] Found tarball: $TARBALL"
 echo "[i] Installing globally with $PKG_MANAGER..."
 
 if [ "$PKG_MANAGER" = "bun" ]; then
+    # Remove existing to avoid duplicate key warnings in bun's global package.json
+    # (bun add -g appends instead of replacing file: protocol entries)
+    bun remove -g @kaitranntt/ccs 2>/dev/null || true
     # Bun requires file: protocol for local tarballs
     bun add -g "file:$(pwd)/$TARBALL"
 else