diff --git a/Gemfile.lock b/Gemfile.lock
index 90f71e4..312ac72 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,8 +25,8 @@ GEM
     fast_blank (1.0.0)
     fastimage (2.0.1)
       addressable (~> 2)
-    ffi (1.9.17)
-    ffi (1.9.17-x64-mingw32)
+    ffi (1.12.2)
+    ffi (1.12.2-x64-mingw32)
     haml (4.0.7)
       tilt
     hamster (3.0.0)