diff --git a/Gemfile.lock b/Gemfile.lock
index 1b09a75..3ad4599 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,4 +1,3 @@
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -13,7 +12,7 @@ GEM
     colored (1.2)
     ethon (0.8.1)
       ffi (>= 1.3.0)
-    ffi (1.9.10)
+    ffi (1.15.5)
     html-proofer (2.6.4)
       activesupport (~> 4.2)
       addressable (~> 2.3)
@@ -52,15 +51,15 @@ GEM
       mini_portile2 (~> 2.0.0.rc2)
     parallel (1.6.1)
     rb-fsevent (0.9.7)
-    rb-inotify (0.9.6)
-      ffi (>= 0.5.0)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rouge (1.10.1)
     safe_yaml (1.0.4)
     sass (3.4.21)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     typhoeus (0.8.0)
       ethon (>= 0.8.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     yell (2.0.5)