diff --git a/Gemfile.lock b/Gemfile.lock
index 89b4a9a..30eb176 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,10 +53,9 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (>= 2.0, < 4.0)
-    chartkick (3.2.1)
+    chartkick (3.3.0)
     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)
@@ -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