diff --git a/Gemfile.lock b/Gemfile.lock
index 87edfa767c..14635a8cb2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -190,6 +190,8 @@ GEM
       eventmachine (>= 0.12.0)
       websocket-driver (>= 0.5.1)
     ffi (1.9.14)
+    ffi (1.9.14-x64-mingw32)
+    ffi (1.9.14-x86-mingw32)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     hiredis (0.6.1)