diff --git a/Gemfile.lock b/Gemfile.lock
index 0528aef..f5ebc6a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,14 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.4)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
+    ffi (1.10.0)
     ffi (1.10.0-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
@@ -48,7 +50,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (4.0.7)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
@@ -64,17 +66,16 @@ GEM
       concurrent-ruby (~> 1.0)
     tzinfo-data (1.2018.9)
       tzinfo (>= 1.0.0)
-    wdm (0.1.1)
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   jekyll (~> 3.8.4)
   jekyll-feed (~> 0.6)
   minima (~> 2.0)
   tzinfo-data
-  wdm (~> 0.1.0)
 
 BUNDLED WITH
    2.0.1