diff --git a/Gemfile.lock b/Gemfile.lock
old mode 100755
new mode 100644
index 9bc6754..9ba34b3
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,8 +5,8 @@ GEM
     colorator (0.1)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.10)
-    ffi (1.9.10-x64-mingw32)
+    ffi (1.13.1)
+    ffi (1.13.1-x64-mingw32)
     jekyll (3.1.6)
       colorator (~> 0.1)
       jekyll-sass-converter (~> 1.0)