diff --git a/Gemfile.lock b/Gemfile.lock
index 45bfd3f..5c5b006 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,7 +54,7 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.18.1)
+    json (2.19.2)
     kramdown (2.5.2)
       rexml (>= 3.4.4)
     kramdown-parser-gfm (1.1.0)
@@ -83,7 +83,6 @@ GEM
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.6.0)
-    wdm (0.2.0)
     webrick (1.9.2)
 
 PLATFORMS
@@ -95,7 +94,6 @@ DEPENDENCIES
   jekyll-redirect-from
   jekyll-seo-tag
   jekyll-sitemap
-  wdm (>= 0.2.0)
 
 BUNDLED WITH
   4.0.7