diff --git a/Gemfile.lock b/Gemfile.lock
index 21ebab5..9b8ae9d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,12 +2,12 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.2.9)
-    activesupport (4.1.0)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
+    activesupport (6.0.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.1, >= 2.1.8)
     blankslate (2.1.2.4)
     chunky_png (1.3.1)
     classifier (1.3.4)
@@ -20,6 +20,7 @@ GEM
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.2.19)
+    concurrent-ruby (1.1.5)
     ethon (0.7.0)
       ffi (>= 1.3.0)
     fast-stemmer (1.0.2)
@@ -47,7 +48,8 @@ GEM
       mercenary (~> 0.3.2)
       nokogiri (~> 1.6.0)
       typhoeus (~> 0.6.7)
-    i18n (0.6.9)
+    i18n (1.6.0)
+      concurrent-ruby (~> 1.0)
     jekyll (1.5.1)
       classifier (~> 1.3)
       colorator (~> 0.1)
@@ -70,7 +72,6 @@ GEM
       gemoji (~> 1.5.0)
       html-pipeline (~> 1.5.0)
       jekyll (~> 1.4)
-    json (1.8.1)
     kramdown (1.3.1)
     liquid (2.5.5)
     listen (1.3.1)
@@ -80,7 +81,7 @@ GEM
     maruku (0.7.0)
     mercenary (0.3.2)
     mini_portile (0.5.3)
-    minitest (5.3.3)
+    minitest (5.12.0)
     nokogiri (1.6.1)
       mini_portile (~> 0.5.0)
     parslet (1.5.0)
@@ -102,14 +103,15 @@ GEM
     redcarpet (2.3.0)
     safe_yaml (1.0.3)
     sass (3.2.19)
-    thread_safe (0.3.3)
+    thread_safe (0.3.6)
     toml (0.1.1)
       parslet (~> 1.5.0)
     typhoeus (0.6.8)
       ethon (>= 0.7.0)
-    tzinfo (1.1.0)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
     yajl-ruby (1.1.0)
+    zeitwerk (2.1.10)
 
 PLATFORMS
   ruby