diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 27e4159d..08e5c15f 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
     colorator (0.1)
     execjs (2.2.1)
     fast-stemmer (1.0.2)
-    ffi (1.9.5)
+    ffi (1.11.1)
     gemoji (2.1.0)
     github-pages (28)
       RedCloth (= 4.2.9)
@@ -90,7 +90,7 @@ GEM
       mini_portile (= 0.6.0)
     parslet (1.5.0)
       blankslate (~> 2.0)
-    posix-spawn (0.3.9)
+    posix-spawn (0.3.13)
     pygments.rb (0.6.0)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
@@ -108,7 +108,7 @@ GEM
       parslet (~> 1.5.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    yajl-ruby (1.3.1)
+    yajl-ruby (1.1.0)
 
 PLATFORMS
   ruby