diff --git a/.gitignore b/.gitignore
index 4dbf3d83..e041a351 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 .pidfile.pid
 node_modules
 *~
-package-lock.json
+sockjs-protocol
diff --git a/scripts/test.sh b/scripts/test.sh
index a27059ab..9ee302f5 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -2,6 +2,7 @@
 
 set -e
 
+rm -rf sockjs-protocol
 git clone --depth=1 https://github.com/sockjs/sockjs-protocol.git
 cd sockjs-protocol
 make test_deps pycco_deps