diff --git a/Gemfile.lock b/Gemfile.lock
index 7e1fb93..d538d7a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,11 +1,10 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     ffi (1.9.18)
-    ffi (1.9.18-x86-mingw32)
     forwardable-extended (2.6.0)
     jekyll (3.6.2)
       addressable (~> 2.4)
@@ -35,7 +34,7 @@ GEM
       jekyll (~> 3.3)
     pathutil (0.16.0)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.1)
+    public_suffix (5.0.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)