diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
old mode 100755
new mode 100644
index 60cf1c5..457c400
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     execjs (2.7.0)
     faraday (0.13.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
+    ffi (1.12.2)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (172)