diff --git a/Gemfile.lock b/Gemfile.lock
index 9bf33ef7..461c8eba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,10 +9,10 @@ GEM
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.8)
-    em-websocket (0.5.2)
+    concurrent-ruby (1.1.10)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
+      http_parser.rb (~> 0)
     ethon (0.14.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
@@ -20,7 +20,7 @@ GEM
     extras (0.3.0)
       forwardable-extended (~> 2.5)
     fastimage (2.2.3)
-    ffi (1.15.0)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
     html-proofer (3.19.1)
       addressable (~> 2.3)
@@ -30,7 +30,7 @@ GEM
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
-    http_parser.rb (0.6.0)
+    http_parser.rb (0.8.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     jekyll (3.9.1)
@@ -68,13 +68,13 @@ GEM
       pathutil (~> 0.16)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-seo-tag (2.7.1)
+    jekyll-seo-tag (2.8.0)
       jekyll (>= 3.8, < 5.0)
     jekyll-sitemap (1.4.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.1)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -82,7 +82,7 @@ GEM
     liquid-tag-parser (1.9.0)
       extras (~> 0.3)
       liquid (>= 3.0, < 5.0)
-    listen (3.5.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
@@ -96,15 +96,15 @@ GEM
     parallel (1.20.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
+    public_suffix (4.0.7)
     racc (1.5.2)
     rack (2.2.3)
     rainbow (3.0.0)
-    rb-fsevent (0.11.0)
+    rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)
-    rouge (3.26.0)
+    rouge (3.29.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)