diff --git a/Gemfile.lock b/Gemfile.lock
index db6f1cb..2cd044e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    ffi (1.9.23)
+    ffi (1.12.1)
     forwardable-extended (2.6.0)
     jekyll (3.4.3)
       addressable (~> 2.4)