diff --git a/Gemfile.lock b/Gemfile.lock
index 9711e30..3c685e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,31 +1,21 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.0)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    colorize (0.8.1)
-    concurrent-ruby (1.0.5)
-    ethon (0.11.0)
-      ffi (>= 1.3.0)
-    ffi (1.9.23)
+    ethon (0.15.0)
+      ffi (>= 1.15.0)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
-    html-proofer (3.8.0)
-      activesupport (>= 4.2, < 6.0)
+    html-proofer (3.19.4)
       addressable (~> 2.3)
-      colorize (~> 0.8)
-      mercenary (~> 0.3.2)
-      nokogiri (~> 1.8.1)
-      parallel (~> 1.3)
+      mercenary (~> 0.3)
+      nokogiri (~> 1.13)
+      parallel (~> 1.10)
+      rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
-    i18n (1.0.1)
-      concurrent-ruby (~> 1.0)
     jekyll (3.4.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -49,16 +39,18 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minima (2.1.1)
       jekyll (~> 3.3)
-    minitest (5.11.3)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
-    parallel (1.12.1)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    parallel (1.22.1)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.2)
+    public_suffix (4.0.7)
+    racc (1.6.0)
+    rainbow (3.1.1)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -69,12 +61,9 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    thread_safe (0.3.6)
-    typhoeus (1.3.0)
+    typhoeus (1.4.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
-    yell (2.0.7)
+    yell (2.2.2)
 
 PLATFORMS
   ruby