diff --git a/Gemfile.lock b/Gemfile.lock
index 5576ddda49d..0a47ae95d48 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,8 +25,8 @@ GEM
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.15.4)
-    ffi (1.15.4-x64-mingw32)
+    ffi (1.15.5)
+    ffi (1.15.5-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.8.0)
     i18n (1.8.11)