diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 131a74f6e8b99f73805e31a9011e2d0a2983de79..2c6da0da5a9a1dbc494a80a8dbaff33184d195aa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,6 +25,7 @@ test4c:
     - build4c
   script:
     - rm -rf ${HOME}/local/
+    - rm -rf ${HOME}/openresty-1.13.6.1/build/nginx-1.13.6/
     - mv local ${HOME}
     - mv nginx-1.13.6 ${HOME}/openresty-1.13.6.1/build/
     - sh test-ngx-voms.sh