diff --git a/.travis.yml b/.travis.yml
index f70c89c..69a0c96 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,10 @@ rvm:
   - 2.4
   - 2.6
 
-before_install: gem install bundler
+before_install:
+  - gem update --system
+  - gem install bundler
+
 script: script/cibuild
 
 env: