diff --git a/.ruby-version b/.ruby-version
index 73462a5..59aa62c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.1
+2.4.5
diff --git a/.travis.yml b/.travis.yml
index e5e32cd..e161942 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,8 +8,8 @@ rvm:
   - 2.6
   - 2.7
 before_install:
-  - gem install bundler -v 1.17.3
-install: BUNDLER_VERSION=1.17.3 bundle install --jobs=3 --retry=3
+  - gem install bundler -v 2.1.4
+install: BUNDLER_VERSION=2.1.4 bundle install --jobs=3 --retry=3
 script:
   - bundle exec rake
 deploy: