diff --git a/Gemfile.lock b/Gemfile.lock
index c79660b6aa11..31742fc3a4c2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.9.25)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
     fssm (0.2.10)
     http_parser.rb (0.6.0)