diff --git a/Gemfile.lock b/Gemfile.lock
index 019a5332..0b1a6991 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,7 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.5)
-    ffi (1.9.23)
+    ffi (1.13.1)
     forwardable-extended (2.6.0)
     haml (5.0.4)
       temple (>= 0.8.0)