diff --git a/Gemfile.lock b/Gemfile.lock
index 89b4a9a..42092cc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ansi (1.5.0)
     arel (8.0.0)
     bcrypt (3.1.13)
@@ -56,7 +56,6 @@ GEM
     chartkick (3.2.1)
     childprocess (1.0.1)
       rake (< 13.0)
-    choice (0.2.0)
     coderay (1.1.2)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
@@ -132,7 +131,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.1.1)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-proxy (0.6.5)
@@ -158,11 +157,6 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-erd (1.6.0)
-      activerecord (>= 4.2)
-      activesupport (>= 4.2)
-      choice (~> 0.2.0)
-      ruby-graphviz (~> 1.2)
     rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
     railties (5.1.7)
@@ -179,7 +173,6 @@ GEM
     responders (2.4.1)
       actionpack (>= 4.2.0, < 6.0)
       railties (>= 4.2.0, < 6.0)
-    ruby-graphviz (1.2.4)
     ruby-progressbar (1.10.1)
     ruby_dep (1.5.0)
     rubyzip (1.2.3)
@@ -259,7 +252,6 @@ DEPENDENCIES
   puma (~> 3.7)
   rails (~> 5.1.4)
   rails-controller-testing (= 1.0.2)
-  rails-erd
   redis (~> 3.3)
   sass-rails (~> 5.0)
   selenium-webdriver