diff --git a/.travis.yml b/.travis.yml
index d12ad3d1..5d9f0440 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ language: ruby
 sudo: false
 
 rvm:      
-  - 2.2.2
+  - 2.3
 
 install: 'echo skip bundle install'
 
diff --git a/after_init.rb b/after_init.rb
index 21b64473..57a8f8a7 100644
--- a/after_init.rb
+++ b/after_init.rb
@@ -69,7 +69,7 @@ else
   end
 end
 
-def prepare
+ActionDispatch::Reloader.to_prepare do
   # Rubyzip configuration
   Zip.unicode_names = true
 
@@ -81,13 +81,3 @@ def prepare
   Redmine::Activity.register :dmsf_file_revision_accesses, :default => false
   Redmine::Activity.register :dmsf_file_revisions
 end
-
-if Rails::VERSION::MAJOR >= 5 && Rails::VERSION::MINOR >= 1
-  ActiveSupport::Reloader.to_prepare do
-    prepare
-  end
-else
-  ActionDispatch::Reloader.to_prepare do
-    prepare
-  end
-end
diff --git a/test/ci/redmine_install.sh b/test/ci/redmine_install.sh
index e945f50e..ee07a483 100644
--- a/test/ci/redmine_install.sh
+++ b/test/ci/redmine_install.sh
@@ -26,7 +26,7 @@ export PATH_TO_PLUGINS=./plugins
 export GENERATE_SECRET=generate_secret_token
 export MIGRATE_PLUGINS=redmine:plugins:migrate
 export REDMINE_GIT_REPO=git://github.com/redmine/redmine.git
-export REDMINE_GIT_TAG=master
+export REDMINE_GIT_TAG=3.4-stable
 export BUNDLE_GEMFILE=$PATH_TO_REDMINE/Gemfile
 
 clone_redmine()