diff --git a/Gemfile b/Gemfile
index 835eddb..5798217 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,12 +1,12 @@
 source "http://rubygems.org"
 
 group :development do
-  gem "shoulda", ">= 3.5.0"
+  gem "shoulda", ">= 3.6.0"
   gem "rdoc", "~> 6.3"
   gem "bundler"
   gem "jeweler", "~> 2.0.1"
-  gem "activemodel", "~> 6.1"
-  gem "rack", ">= 2.1.3"
+  gem "activemodel", "~> 6.1", ">= 6.1.7.3"
+  gem "rack", ">= 3.0.0"
   gem "rake"
   gem "minitest"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 2b3acbd..4c2341c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,33 +1,55 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (6.1.4.1)
-      activesupport (= 6.1.4.1)
-    activesupport (6.1.4.1)
+    activemodel (6.1.7.3)
+      activesupport (= 6.1.7.3)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.3)
+      public_suffix (>= 2.0.2, < 6.0)
     builder (3.2.4)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.2.2)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
-    faraday (0.17.3)
-      multipart-post (>= 1.2, < 3)
-    git (1.7.0)
+    faraday (1.10.3)
+      faraday-em_http (~> 1.0)
+      faraday-em_synchrony (~> 1.0)
+      faraday-excon (~> 1.1)
+      faraday-httpclient (~> 1.0)
+      faraday-multipart (~> 1.0)
+      faraday-net_http (~> 1.0)
+      faraday-net_http_persistent (~> 1.0)
+      faraday-patron (~> 1.0)
+      faraday-rack (~> 1.0)
+      faraday-retry (~> 1.0)
+      ruby2_keywords (>= 0.0.4)
+    faraday-em_http (1.0.0)
+    faraday-em_synchrony (1.0.0)
+    faraday-excon (1.1.0)
+    faraday-httpclient (1.0.1)
+    faraday-multipart (1.0.4)
+      multipart-post (~> 2)
+    faraday-net_http (1.0.1)
+    faraday-net_http_persistent (1.2.0)
+    faraday-patron (1.0.0)
+    faraday-rack (1.0.0)
+    faraday-retry (1.0.3)
+    git (1.18.0)
+      addressable (~> 2.8)
       rchardet (~> 1.8)
-    github_api (0.18.2)
+    github_api (0.19.0)
       addressable (~> 2.4)
       descendants_tracker (~> 0.0.4)
-      faraday (~> 0.8)
+      faraday (>= 0.8, < 2)
       hashie (~> 3.5, >= 3.5.2)
       oauth2 (~> 1.0)
     hashie (3.6.0)
-    highline (2.0.3)
-    i18n (1.8.10)
+    highline (2.1.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     jeweler (2.0.1)
       builder
@@ -38,48 +60,55 @@ GEM
       nokogiri (>= 1.5.10)
       rake
       rdoc
-    jwt (2.2.1)
-    mini_portile2 (2.4.0)
-    minitest (5.13.0)
-    multi_json (1.14.1)
+    jwt (2.7.0)
+    mini_portile2 (2.8.1)
+    minitest (5.18.0)
+    multi_json (1.15.0)
     multi_xml (0.6.0)
-    multipart-post (2.1.1)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
-    oauth2 (1.4.4)
-      faraday (>= 0.8, < 2.0)
+    multipart-post (2.3.0)
+    nokogiri (1.14.2)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    oauth2 (1.4.11)
+      faraday (>= 0.17.3, < 3.0)
       jwt (>= 1.0, < 3.0)
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
-      rack (>= 1.2, < 3)
-    public_suffix (4.0.6)
-    rack (2.2.3)
-    rake (13.0.1)
+      rack (>= 1.2, < 4)
+    psych (5.1.0)
+      stringio
+    public_suffix (5.0.1)
+    racc (1.6.2)
+    rack (3.0.7)
+    rake (13.0.6)
     rchardet (1.8.0)
-    rdoc (6.3.3)
-    shoulda (3.6.0)
-      shoulda-context (~> 1.0, >= 1.0.1)
-      shoulda-matchers (~> 3.0)
-    shoulda-context (1.2.2)
-    shoulda-matchers (3.1.3)
-      activesupport (>= 4.0.0)
+    rdoc (6.5.0)
+      psych (>= 4.0.0)
+    ruby2_keywords (0.0.5)
+    shoulda (4.0.0)
+      shoulda-context (~> 2.0)
+      shoulda-matchers (~> 4.0)
+    shoulda-context (2.0.0)
+    shoulda-matchers (4.5.1)
+      activesupport (>= 4.2.0)
+    stringio (3.0.5)
     thread_safe (0.3.6)
-    tzinfo (2.0.4)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.5.1)
+    zeitwerk (2.6.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activemodel (~> 6.1)
+  activemodel (~> 6.1, >= 6.1.7.3)
   bundler
   jeweler (~> 2.0.1)
   minitest
-  rack (>= 2.1.3)
+  rack (>= 3.0.0)
   rake
   rdoc (~> 6.3)
-  shoulda (>= 3.5.0)
+  shoulda (>= 3.6.0)
 
 BUNDLED WITH
    1.17.3