diff --git a/Gemfile.lock b/Gemfile.lock
index 6929ff41..86aede7c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,17 +5,17 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     builder (3.2.3)
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.11.3)
+    ffi (1.13.1)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.6)
+    jekyll (3.8.7)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -43,11 +43,11 @@ GEM
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    public_suffix (4.0.5)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (3.14.0)
+    rouge (3.21.0)
     rubysl-rexml (2.0.4)
     safe_yaml (1.0.5)
     sass (3.7.4)