diff --git a/Gemfile.lock b/Gemfile.lock
index 19fc345..b11345e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,78 +1,82 @@
 PATH
   remote: .
   specs:
-    neo4apis-github (0.1.0)
+    neo4apis-github (0.2.1)
       github_api (~> 0.12.2)
-      neo4apis (~> 0.2.0)
+      neo4apis (>= 0.6.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.1.7)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
+    activesupport (4.2.11.3)
+      i18n (~> 0.7)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
+      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.6)
+    addressable (2.4.0)
     coderay (1.1.0)
+    colorize (0.7.7)
+    concurrent-ruby (1.1.9)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.2.5)
-    faraday (0.9.0)
+    ethon (0.12.0)
+      ffi (>= 1.3.0)
+    faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    faraday_middleware (0.9.1)
-      faraday (>= 0.7.4, < 0.10)
-    github_api (0.12.2)
+    faraday_middleware (0.14.0)
+      faraday (>= 0.7.4, < 1.0)
+    faraday_middleware-multi_json (0.0.6)
+      faraday_middleware
+      multi_json
+    ffi (1.10.0)
+    github_api (0.12.4)
       addressable (~> 2.3)
       descendants_tracker (~> 0.0.4)
       faraday (~> 0.8, < 0.10)
-      hashie (>= 3.3)
+      hashie (>= 3.4)
       multi_json (>= 1.7.5, < 2.0)
-      nokogiri (~> 1.6.3)
+      nokogiri (~> 1.6.6)
       oauth2
-    hashie (3.3.1)
-    httparty (0.13.1)
-      json (~> 1.8)
-      multi_xml (>= 0.5.2)
-    httpclient (2.5.2)
-    i18n (0.6.11)
-    json (1.8.1)
-    jwt (1.0.0)
+    hashie (5.0.0)
+    httpclient (2.8.3)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (2.3.0)
+    jwt (1.5.6)
     method_source (0.8.2)
-    mini_portile (0.6.0)
-    minitest (5.4.2)
-    multi_json (1.10.1)
-    multi_xml (0.5.5)
-    multipart-post (2.0.0)
-    neo4apis (0.2.0)
-      faraday (~> 0.9.0)
-      neo4j-core (~> 3.0.4)
-    neo4j-core (3.0.4)
-      activesupport
+    mini_portile2 (2.1.0)
+    minitest (5.12.0)
+    multi_json (1.15.0)
+    multi_xml (0.6.0)
+    multipart-post (2.2.0)
+    neo4apis (0.9.1)
+      colorize (~> 0.7.3)
       faraday (~> 0.9.0)
-      faraday_middleware (~> 0.9.1)
-      httparty
+      neo4j-core (>= 4.0.5)
+      thor (~> 0.19.1)
+    neo4j-core (8.1.4)
+      activesupport (>= 4.0)
+      faraday (>= 0.9.0)
+      faraday_middleware (>= 0.10.0)
+      faraday_middleware-multi_json
       httpclient
       json
-      net-http-persistent
-      os
-      zip
-    net-http-persistent (2.9.4)
-    nokogiri (1.6.3.1)
-      mini_portile (= 0.6.0)
-    oauth2 (1.0.0)
-      faraday (>= 0.8, < 0.10)
-      jwt (~> 1.0)
+      multi_json
+      typhoeus (>= 1.1.2)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
+    oauth2 (1.4.8)
+      faraday (>= 0.8, < 3.0)
+      jwt (>= 1.0, < 3.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (~> 1.2)
-    os (0.9.6)
+      rack (>= 1.2, < 3)
     pry (0.10.1)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.5.2)
+    rack (1.6.13)
     rspec (3.1.0)
       rspec-core (~> 3.1.0)
       rspec-expectations (~> 3.1.0)
@@ -86,10 +90,12 @@ GEM
       rspec-support (~> 3.1.0)
     rspec-support (3.1.2)
     slop (3.6.0)
-    thread_safe (0.3.4)
-    tzinfo (1.2.2)
+    thor (0.19.4)
+    thread_safe (0.3.6)
+    typhoeus (1.4.0)
+      ethon (>= 0.9.0)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
-    zip (2.0.2)
 
 PLATFORMS
   ruby