diff --git a/Gemfile.lock b/Gemfile.lock
index f0ddc67..d39c156 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.3.3)
+    activesupport (6.0.6.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -16,7 +16,7 @@ GEM
     colorator (1.1.0)
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.2.0)
     dnsruby (1.61.4)
       simpleidn (~> 0.1)
     em-websocket (0.5.2)
@@ -114,6 +114,7 @@ GEM
       rouge (>= 2.0, < 4.0)
     jekyll-default-layout (0.1.4)
       jekyll (~> 3.0)
+    jekyll-email-protect (1.1.0)
     jekyll-feed (0.13.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
@@ -206,7 +207,7 @@ GEM
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.14.2)
+    minitest (5.17.0)
     multipart-post (2.1.1)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
@@ -250,13 +251,14 @@ GEM
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
     wdm (0.1.1)
-    zeitwerk (2.4.0)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   github-pages
+  jekyll-email-protect
   jekyll-feed (~> 0.6)
   minima (~> 2.0)
   rake