diff --git a/.travis.yml b/.travis.yml
index 2c92572..603486d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,5 @@
 rvm:
-  - 1.9.2
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
-  - 2.2.0
+  - 2.1.8
+  - 2.2.4
   - 2.3.0
-  - jruby-19mode
+  - jruby-9.0.5.0
diff --git a/Gemfile b/Gemfile
index 03c98f2..dbee8d6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,8 @@
 source "https://rubygems.org"
 
 group :development do
-  gem "shoulda", "~> 2.11.3"
-  gem "jeweler", "~> 1.8.7"
-  gem "mocha", "~> 0.14.0"
+  gem "shoulda", "~> 3.5.0"
+  gem "jeweler", "~> 2.0.1"
+  gem "mocha", "~> 1.1.0"
   gem "test-unit", "~> 3.0.8"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 0a6c00f..f9fa938 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,61 +1,81 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.3.5)
+    activesupport (4.2.6)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    addressable (2.4.0)
     builder (3.2.2)
-    faraday (0.8.8)
-      multipart-post (~> 1.2.0)
-    git (1.2.6)
-    github_api (0.10.1)
-      addressable
-      faraday (~> 0.8.1)
-      hashie (>= 1.2)
-      multi_json (~> 1.4)
-      nokogiri (~> 1.5.2)
+    descendants_tracker (0.0.4)
+      thread_safe (~> 0.3, >= 0.3.1)
+    faraday (0.9.2)
+      multipart-post (>= 1.2, < 3)
+    git (1.3.0)
+    github_api (0.13.1)
+      addressable (~> 2.4.0)
+      descendants_tracker (~> 0.0.4)
+      faraday (~> 0.8, < 0.10)
+      hashie (>= 3.4)
+      multi_json (>= 1.7.5, < 2.0)
       oauth2
-    hashie (2.0.5)
-    highline (1.6.19)
-    httpauth (0.2.0)
-    jeweler (1.8.7)
+    hashie (3.4.3)
+    highline (1.7.8)
+    i18n (0.7.0)
+    jeweler (2.0.1)
       builder
-      bundler (~> 1.0)
+      bundler (>= 1.0)
       git (>= 1.2.5)
-      github_api (= 0.10.1)
+      github_api
       highline (>= 1.6.15)
-      nokogiri (= 1.5.10)
+      nokogiri (>= 1.5.10)
       rake
       rdoc
-    json (1.8.2)
-    jwt (0.1.8)
-      multi_json (>= 1.5)
-    metaclass (0.0.1)
-    mocha (0.14.0)
+    json (1.8.3)
+    jwt (1.5.1)
+    metaclass (0.0.4)
+    mini_portile2 (2.0.0)
+    minitest (5.8.4)
+    mocha (1.1.0)
       metaclass (~> 0.0.1)
-    multi_json (1.7.9)
+    multi_json (1.11.2)
     multi_xml (0.5.5)
-    multipart-post (1.2.0)
-    nokogiri (1.5.10)
-    oauth2 (0.9.2)
-      faraday (~> 0.8)
-      httpauth (~> 0.2)
-      jwt (~> 0.1.4)
-      multi_json (~> 1.0)
+    multipart-post (2.0.0)
+    nokogiri (1.6.7.2)
+      mini_portile2 (~> 2.0.0.rc2)
+    oauth2 (1.1.0)
+      faraday (>= 0.8, < 0.10)
+      jwt (~> 1.0, < 1.5.2)
+      multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
-    power_assert (0.2.3)
-    rack (1.5.2)
-    rake (10.1.0)
-    rdoc (4.0.1)
+      rack (>= 1.2, < 3)
+    power_assert (0.2.7)
+    rack (1.6.4)
+    rake (11.1.1)
+    rdoc (4.2.2)
       json (~> 1.4)
-    shoulda (2.11.3)
+    shoulda (3.5.0)
+      shoulda-context (~> 1.0, >= 1.0.1)
+      shoulda-matchers (>= 1.4.1, < 3.0)
+    shoulda-context (1.2.1)
+    shoulda-matchers (2.8.0)
+      activesupport (>= 3.0.0)
     test-unit (3.0.9)
       power_assert
+    thread_safe (0.3.5)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jeweler (~> 1.8.7)
-  mocha (~> 0.14.0)
-  shoulda (~> 2.11.3)
+  jeweler (~> 2.0.1)
+  mocha (~> 1.1.0)
+  shoulda (~> 3.5.0)
   test-unit (~> 3.0.8)
+
+BUNDLED WITH
+   1.11.2
diff --git a/test/helper.rb b/test/helper.rb
index 13f879a..5a6271f 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -1,7 +1,7 @@
 require 'rubygems'
 require 'test/unit'
 require 'shoulda'
-require 'mocha'
+require 'mocha/setup'
 
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 $LOAD_PATH.unshift(File.dirname(__FILE__))
diff --git a/test/test_notifier.rb b/test/test_notifier.rb
index 06f0a5a..f416e84 100644
--- a/test/test_notifier.rb
+++ b/test/test_notifier.rb
@@ -52,14 +52,14 @@ class TestNotifier < Test::Unit::TestCase
         e.set_backtrace(caller)
         hash = @notifier.__send__(:extract_hash, e)
         assert_equal 'RuntimeError: message', hash['short_message']
-        assert_match /Backtrace/, hash['full_message']
+        assert_match(/Backtrace/, hash['full_message'])
         assert_equal GELF::ERROR, hash['level']
       end
 
       should "work with exception without backtrace" do
         e = RuntimeError.new('message')
         hash = @notifier.__send__(:extract_hash, e)
-        assert_match /Backtrace is not available/, hash['full_message']
+        assert_match(/Backtrace is not available/, hash['full_message'])
       end
 
       should "work with exception and hash" do
@@ -108,7 +108,7 @@ class TestNotifier < Test::Unit::TestCase
       should "set file and line" do
         line = __LINE__
         hash = @notifier.__send__(:extract_hash, { 'version' => '1.0', 'short_message' => 'message' })
-        assert_match /test_notifier.rb/, hash['file']
+        assert_match(/test_notifier.rb/, hash['file'])
         assert_equal line + 1, hash['line']
       end