diff --git a/Gemfile.lock b/Gemfile.lock
index c60a37e..2c774bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,16 +2,12 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.0)
-    commonmarker (0.17.9)
-      ruby-enum (~> 0.5)
-    concurrent-ruby (1.0.5)
+    commonmarker (0.23.7)
     diff-lcs (1.3)
     docile (1.3.0)
     haml (5.0.4)
       temple (>= 0.8.0)
       tilt
-    i18n (1.0.1)
-      concurrent-ruby (~> 1.0)
     json (2.1.0)
     parallel (1.12.1)
     parser (2.5.1.0)
@@ -41,8 +37,6 @@ GEM
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-enum (0.7.2)
-      i18n
     ruby-progressbar (1.9.0)
     simplecov (0.16.1)
       docile (~> 1.1)