diff --git a/Gemfile.lock b/Gemfile.lock
index f8f9988..d70eef7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -213,6 +213,8 @@ GEM
     multipart-post (2.1.1)
     nokogiri (1.11.1-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.11.1-x86_64-linux)
+      racc (~> 1.4)
     octokit (4.20.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
@@ -223,7 +225,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rouge (3.26.0)
     ruby-enum (0.9.0)
       i18n
@@ -255,10 +257,10 @@ GEM
 
 PLATFORMS
   x86_64-darwin-18
+  x86_64-linux
 
 DEPENDENCIES
   github-pages (~> 212)
-  jekyll (~> 3.9.0)
   jekyll-feed (~> 0.12)
   minima (~> 2.5)
   tzinfo (~> 1.2)