diff --git a/bootstrap-4.0.0/Gemfile.lock b/bootstrap-4.0.0/Gemfile.lock
index a49115b..eb982a6 100644
--- a/bootstrap-4.0.0/Gemfile.lock
+++ b/bootstrap-4.0.0/Gemfile.lock
@@ -10,8 +10,8 @@ GEM
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.5)
     eventmachine (1.2.5-x64-mingw32)
-    ffi (1.9.18)
-    ffi (1.9.18-x64-mingw32)
+    ffi (1.11.1)
+    ffi (1.11.1-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.1)