diff --git a/Gemfile.lock b/Gemfile.lock
index 55f808e..20f4bc7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,7 +19,7 @@ GEM
     execjs (2.7.0)
     faraday (0.11.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.17)
+    ffi (1.15.4)
     forwardable-extended (2.6.0)
     gemoji (2.1.0)
     github-pages (117)
@@ -73,7 +73,7 @@ GEM
       typhoeus (~> 0.7)
     html-pipeline (2.5.0)
       activesupport (>= 2)
-      nokogiri (1.8.2)
+      nokogiri (= 1.8.2)
     i18n (0.7.0)
     jekyll (3.3.1)
       addressable (~> 2.4)