diff --git a/Gemfile.lock b/Gemfile.lock
index 4160af0..fd1ebc1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,7 +103,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.4.0)
+    rexml (3.4.2)
     rouge (4.5.1)
     safe_yaml (1.0.5)
     sass-embedded (1.83.4-x64-mingw-ucrt)
@@ -117,7 +117,6 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)
     uri (1.0.3)
-    wdm (0.2.0)
     webrick (1.9.1)
 
 PLATFORMS
@@ -132,7 +131,6 @@ DEPENDENCIES
   jekyll-redirect-from (~> 0.16.0)
   jekyll-toc (~> 0.19.0)
   premailer
-  wdm (>= 0.1.0)
 
 BUNDLED WITH
    2.5.22