diff --git a/Gemfile.lock b/Gemfile.lock
index 029ec77..f628485 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
       tzinfo (~> 1.1)
     coderay (1.1.1)
     colorator (0.1)
-    ffi (1.9.10)
+    ffi (1.15.3)
     i18n (0.7.0)
     jekyll (3.1.2)
       colorator (~> 0.1)