diff --git a/Gemfile.lock b/Gemfile.lock
index fc53bf238..01700aa41 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,9 +7,8 @@ GEM
     classifier-reborn (2.2.0)
       fast-stemmer (~> 1.0)
     colorator (1.1.0)
-    commonmarker (0.21.0)
-      ruby-enum (~> 0.5)
-    concurrent-ruby (1.1.6)
+    commonmarker (0.23.4)
+    concurrent-ruby (1.1.9)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -21,7 +20,7 @@ GEM
     forwardable-extended (2.6.0)
     gsl (2.1.0.3)
     http_parser.rb (0.6.0)
-    i18n (1.8.4)
+    i18n (1.10.0)
       concurrent-ruby (~> 1.0)
     jekyll (4.1.1)
       addressable (~> 2.4)
@@ -93,8 +92,6 @@ GEM
       ffi (~> 1.0)
     rexml (3.2.4)
     rouge (3.21.0)
-    ruby-enum (0.8.0)
-      i18n
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)