diff --git a/Gemfile.lock b/Gemfile.lock
index 3106b1ed..3fcb1569 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -220,7 +220,7 @@ GEM
       gemoji (>= 3, < 5)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
-    json (2.13.0)
+    json (2.13.1)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -280,7 +280,6 @@ GEM
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
     uri (0.13.0)
-    wdm (0.2.0)
     webrick (1.9.1)
     yell (2.2.2)
 
@@ -294,7 +293,6 @@ DEPENDENCIES
   github-pages (= 232)
   html-proofer (~> 3.19.4)
   json
-  wdm (>= 0.1.1)
   webrick (~> 1.9)
 
 BUNDLED WITH