diff --git a/Gemfile.lock b/Gemfile.lock
index 43fa837..649bd88 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,8 +55,8 @@ GEM
     execjs (2.7.0)
     faraday (0.14.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.23)
-    ffi (1.9.23-x86-mingw32)
+    ffi (1.13.1)
+    ffi (1.13.1-x86-mingw32)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
     i18n (1.0.0)