diff --git a/.travis.yml b/.travis.yml
index bcac9157..2a8b010b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+dist: trusty
 language: ruby
 cache: bundler
 bundler_args: --without development
@@ -9,6 +10,7 @@ notifications:
   webhooks:
     - https://webhooks.gitter.im/e/b5d48907cdc89864b874
 rvm:
-  - 2.3.1
-  - 2.2
+  - 2.6.1
+  - 2.5.3
+  - 2.4.5
 sudo: false
diff --git a/refinerycms-blog.gemspec b/refinerycms-blog.gemspec
index 9853d7c0..3bb31276 100644
--- a/refinerycms-blog.gemspec
+++ b/refinerycms-blog.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name              = %q{refinerycms-blog}
-  s.version           = %q{4.0.0}
+  s.version           = %q{4.0.1}
   s.description       = %q{A really straightforward open source Ruby on Rails blog engine designed for integration with Refinery CMS.}
   s.summary           = %q{Ruby on Rails blogging engine for Refinery CMS.}
   s.email             = %q{info@refinerycms.com}
@@ -15,17 +15,16 @@ Gem::Specification.new do |s|
   s.test_files        = `git ls-files -- spec/*`.split("\n")
 
   # Runtime dependencies
-  s.add_dependency    'refinerycms-core',      '~> 4.0'
-  s.add_dependency    'refinerycms-settings',  '~> 4.0'
+  s.add_dependency    'refinerycms-core',      '>= 4.0', '< 5'
+  s.add_dependency    'refinerycms-settings',  '>= 4.0', '< 5'
   s.add_dependency    'filters_spam',          '~> 0.2'
-  s.add_dependency    'acts-as-taggable-on'
+  s.add_dependency    'acts-as-taggable-on',   '~> 6'
   s.add_dependency    'seo_meta',              ['>=3.0.0', '~>3.0']
   s.add_dependency    'rails_autolink',        '~> 1.1.3'
   s.add_dependency    'friendly_id',           ['< 5.3', '>= 5.1.0']
-  s.add_dependency    'globalize',             '~> 5.1.0'
+  s.add_dependency    'globalize',             '~> 5.3.0'
   s.add_dependency    'activemodel-serializers-xml', '~> 1.0', '>= 1.0.1'
-  s.add_dependency    'responders',            '~> 2.0'
-
+  s.add_dependency    'responders',            '~> 3.0'
 
   s.cert_chain = [File.expand_path('certs/parndt.pem', __dir__)]
   if $PROGRAM_NAME =~ /gem\z/ && ARGV.include?('build') && ARGV.include?(__FILE__)