diff --git a/Gemfile.lock b/Gemfile.lock
index 18ee784..84cabb1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
     ethon (0.11.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.5)
-    ffi (1.9.18)
+    ffi (1.12.2)
     formatador (0.2.5)
     forwardable-extended (2.6.0)
     guard (2.14.2)