diff --git a/Gemfile.lock b/Gemfile.lock
index 0ff3d58..b40da47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
     crass (1.0.3)
     erubi (1.7.0)
     execjs (2.7.0)
-    ffi (1.9.18)
+    ffi (1.15.5)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     i18n (0.9.1)