diff --git a/Gemfile.lock b/Gemfile.lock
index e9621f1..47401d6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,9 +1,10 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
+    ffi (1.9.18)
     ffi (1.9.18-x64-mingw32)
     ffi (1.9.18-x86-mingw32)
     forwardable-extended (2.6.0)
@@ -35,7 +36,7 @@ GEM
       jekyll (~> 3.3)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.5)
+    public_suffix (4.0.6)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)
@@ -44,6 +45,7 @@ GEM
     sass (3.4.24)
 
 PLATFORMS
+  ruby
   x64-mingw32
   x86-mingw32