diff --git a/.travis.yml b/.travis.yml
index 04dbd5b8..8318b654 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,8 @@
 language: ruby
 rvm:
-  - 2.3.0
+  - 2.3
+  - 2.4
+  - 2.5
 after_success: coveralls
 notifications:
   email:
diff --git a/bin/codedeploy-agent b/bin/codedeploy-agent
index a683d0c3..00ef95f2 100755
--- a/bin/codedeploy-agent
+++ b/bin/codedeploy-agent
@@ -2,7 +2,7 @@
 
 $:.unshift File.join(File.dirname(File.expand_path('..', __FILE__)), 'lib')
 
-ruby_versions = ["2.4", "2.3", "2.2", "2.1", "2.0"]
+ruby_versions = ["2.5", "2.4", "2.3", "2.2", "2.1", "2.0"]
 actual_ruby_version = RUBY_VERSION.split('.').map{|s|s.to_i}
 left_bound = '2.0.0'.split('.').map{|s|s.to_i}
 ruby_bin = nil
diff --git a/bin/install b/bin/install
index ec10fbde..80f4b440 100755
--- a/bin/install
+++ b/bin/install
@@ -86,7 +86,7 @@ EOF
   end
 
   def supported_ruby_versions
-    ['2.4', '2.3', '2.2', '2.1', '2.0']
+    ['2.5', '2.4', '2.3', '2.2', '2.1', '2.0']
   end
 
   # check ruby version, only version 2.x works
@@ -163,7 +163,7 @@ EOF
     # change interpreter when symlink /usr/bin/ruby2.x exists, but running with non-supported ruby version
     actual_ruby_version = RUBY_VERSION.split('.').map{|s|s.to_i}
     left_bound = '2.0.0'.split('.').map{|s|s.to_i}
-    right_bound = '2.4.1'.split('.').map{|s|s.to_i}
+    right_bound = '2.5.1'.split('.').map{|s|s.to_i}
     if (actual_ruby_version <=> left_bound) < 0
       if(!@reexeced)
         @log.info("The current Ruby version is not 2.x! Restarting the installer with #{ruby_interpreter_path}")