diff --git a/.travis.yml b/.travis.yml
index 6875c766a9..be39cdfbc2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -170,9 +170,9 @@ before_script:
     else
       mkdir build
     fi
-  - mkdir config_1st config_2nd
+  - mkdir config_1st config_2nd gems/src
   - chmod -R a-w .
-  - chmod -R u+w build config_1st config_2nd
+  - chmod -R u+w build config_1st config_2nd gems/src
   - cd build
   - |-
     case "$CC" in