diff --git a/.travis.yml b/.travis.yml
index 04fca451..52dfa50d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 ---
-before_install: gem install bundler:2.1.4
+before_install: gem install bundler:2.3.7
 
 rvm:
   - 2.3