diff --git a/Gemfile.lock b/Gemfile.lock
index fa60bbc..a94eb40 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -212,7 +212,7 @@ GEM
     rouge (2.2.1)
     ruby-enum (0.7.1)
       i18n
-    rubyzip (1.2.1)
+    rubyzip (2.3.0)
     safe_yaml (1.0.4)
     sass (3.5.5)
       sass-listen (~> 4.0.0)
@@ -232,7 +232,6 @@ GEM
     tzinfo-data (1.2021.1)
       tzinfo (>= 1.0.0)
     unicode-display_width (1.3.0)
-    wdm (0.1.1)
 
 PLATFORMS
   ruby
@@ -241,7 +240,6 @@ PLATFORMS
 DEPENDENCIES
   github-pages
   tzinfo-data
-  wdm (>= 0.1.0)
 
 BUNDLED WITH
    2.2.14