diff --git a/.gitignore b/.gitignore
index 869811e..7d0bf9c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ Gemfile.lock
 pkg
 coverage
 .DS_Store
+*.gem
+gemfiles/*.gemfile.lock
diff --git a/lib/turbostreamer/version.rb b/lib/turbostreamer/version.rb
index d6bfff4..f63b099 100644
--- a/lib/turbostreamer/version.rb
+++ b/lib/turbostreamer/version.rb
@@ -1,3 +1,3 @@
 class TurboStreamer
-  VERSION = '1.4.0'
+  VERSION = '1.5.0'
 end
diff --git a/turbostreamer.gemspec b/turbostreamer.gemspec
index 2b4be0f..4d30ca7 100644
--- a/turbostreamer.gemspec
+++ b/turbostreamer.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.test_files    = `git ls-files -- {test}/*`.split("\n")
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency 'activesupport', '>= 4.2.0'
+  spec.add_runtime_dependency 'activesupport', '>= 5.0.0'
 
   spec.add_development_dependency "rake"
   spec.add_development_dependency "wankel"