diff --git a/Gemfile b/Gemfile
index 8dc55ef..19a2b61 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,6 +30,6 @@ end
 # Performance-booster for watching directories on Windows
 gem 'wdm', '~> 0.1.1', platforms: %i[mingw x64_mingw mswin]
 
-gem 'html-proofer', '~> 3.18'
+gem 'html-proofer', '~> 3.19'
 
 gem 'rake', '~> 13.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index d916790..accad82 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.13.0)
+    ethon (0.14.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
     ffi (1.15.0)
@@ -62,13 +62,13 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
-    mini_portile2 (2.5.0)
-    nokogiri (1.11.3)
+    mini_portile2 (2.5.1)
+    nokogiri (1.11.4)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
-    nokogiri (1.11.3-x86_64-darwin)
+    nokogiri (1.11.4-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.11.3-x86_64-linux)
+    nokogiri (1.11.4-x86_64-linux)
       racc (~> 1.4)
     nokogumbo (2.0.5)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -80,7 +80,7 @@ GEM
     racc (1.5.2)
     rainbow (3.0.0)
     rake (13.0.3)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)
@@ -101,7 +101,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  html-proofer (~> 3.18)
+  html-proofer (~> 3.19)
   jekyll (~> 4.2.0)
   jekyll-feed!
   jekyll-last-modified-at (~> 1.3)