Update gems
diff --git a/Gemfile.lock b/Gemfile.lock
index 547941e..9152995 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,10 +9,10 @@
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.11.3)
+    ffi (1.12.1)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
-    i18n (1.7.0)
+    i18n (1.8.2)
       concurrent-ruby (~> 1.0)
     jekyll (4.0.0)
       addressable (~> 2.4)
@@ -46,12 +46,12 @@
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
+    public_suffix (4.0.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     ref (2.0.0)
-    rouge (3.14.0)
+    rouge (3.15.0)
     safe_yaml (1.0.5)
     sassc (2.2.1)
       ffi (~> 1.9)
@@ -60,7 +60,7 @@
     therubyracer (0.12.3)
       libv8 (~> 3.16.14.15)
       ref
-    unicode-display_width (1.6.0)
+    unicode-display_width (1.6.1)
 
 PLATFORMS
   ruby