diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index c29604b..2e6d7f7 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.5)
+    commonmarker (0.23.7)
     concurrent-ruby (1.1.10)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)
@@ -213,6 +213,8 @@ GEM
     minitest (5.16.2)
     nokogiri (1.13.8-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.13.8-x86_64-linux)
+      racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
@@ -253,6 +255,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-19
+  x86_64-linux
 
 DEPENDENCIES
   github-pages