diff --git a/Gemfile.lock b/Gemfile.lock
index 19da3cd..35e0cba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
     columnize (0.9.0)
     concurrent-ruby (1.1.7)
     diff-lcs (1.2.5)
-    ffi (1.9.6)
+    ffi (1.13.1)
     formatador (0.2.5)
     git-version-bump (0.15.1)
     guard (2.10.4)