diff --git a/Gemfile.lock b/Gemfile.lock
index b876f30..8e47b6f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,8 +6,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    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)
@@ -70,7 +70,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    public_suffix (5.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
@@ -85,7 +85,6 @@ GEM
     thread_safe (0.3.6)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    wdm (0.1.1)
 
 PLATFORMS
   ruby
@@ -94,7 +93,6 @@ PLATFORMS
 DEPENDENCIES
   jekyll (~> 3.8.3)
   jekyll-theme-minimalism
-  wdm (>= 0.1.0)
 
 BUNDLED WITH
    1.17.2