diff --git a/Gemfile.lock b/Gemfile.lock
index 714ebe3..86a001f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,9 +14,8 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.17.13)
-      ruby-enum (~> 0.5)
-    concurrent-ruby (1.2.0)
+    commonmarker (0.23.10)
+    concurrent-ruby (1.3.3)
     dnsruby (1.61.7)
       simpleidn (~> 0.1)
     em-websocket (0.5.2)
@@ -48,16 +47,17 @@ GEM
     ffi (1.15.4)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
-    github-pages (219)
-      github-pages-health-check (= 1.17.7)
+    github-pages (225)
+      github-pages-health-check (= 1.17.9)
       jekyll (= 3.9.0)
       jekyll-avatar (= 0.7.0)
       jekyll-coffeescript (= 1.1.1)
-      jekyll-commonmark-ghpages (= 0.1.6)
+      jekyll-commonmark-ghpages (= 0.2.0)
       jekyll-default-layout (= 0.1.4)
       jekyll-feed (= 0.15.1)
       jekyll-gist (= 1.5.0)
       jekyll-github-metadata (= 2.13.0)
+      jekyll-include-cache (= 0.2.1)
       jekyll-mentions (= 1.6.0)
       jekyll-optional-front-matter (= 0.3.2)
       jekyll-paginate (= 1.1.0)
@@ -66,7 +66,7 @@ GEM
       jekyll-relative-links (= 0.6.1)
       jekyll-remote-theme (= 0.4.3)
       jekyll-sass-converter (= 1.5.2)
-      jekyll-seo-tag (= 2.7.1)
+      jekyll-seo-tag (= 2.8.0)
       jekyll-sitemap (= 1.4.0)
       jekyll-swiss (= 1.0.0)
       jekyll-theme-architect (= 0.2.0)
@@ -89,10 +89,10 @@ GEM
       liquid (= 4.0.3)
       mercenary (~> 0.3)
       minima (= 2.5.1)
-      nokogiri (>= 1.10.4, < 2.0)
+      nokogiri (>= 1.12.5, < 2.0)
       rouge (= 3.26.0)
       terminal-table (~> 1.4)
-    github-pages-health-check (1.17.7)
+    github-pages-health-check (1.17.9)
       addressable (~> 2.3)
       dnsruby (~> 1.60)
       octokit (~> 4.0)
@@ -122,12 +122,12 @@ GEM
     jekyll-coffeescript (1.1.1)
       coffee-script (~> 2.2)
       coffee-script-source (~> 1.11.1)
-    jekyll-commonmark (1.3.1)
-      commonmarker (~> 0.14)
-      jekyll (>= 3.7, < 5.0)
-    jekyll-commonmark-ghpages (0.1.6)
-      commonmarker (~> 0.17.6)
-      jekyll-commonmark (~> 1.2)
+    jekyll-commonmark (1.4.0)
+      commonmarker (~> 0.22)
+    jekyll-commonmark-ghpages (0.2.0)
+      commonmarker (~> 0.23.4)
+      jekyll (~> 3.9.0)
+      jekyll-commonmark (~> 1.4.0)
       rouge (>= 2.0, < 4.0)
     jekyll-default-layout (0.1.4)
       jekyll (~> 3.0)
@@ -138,6 +138,8 @@ GEM
     jekyll-github-metadata (2.13.0)
       jekyll (>= 3.4, < 5.0)
       octokit (~> 4.0, != 4.4.0)
+    jekyll-include-cache (0.2.1)
+      jekyll (>= 3.7, < 5.0)
     jekyll-mentions (1.6.0)
       html-pipeline (~> 2.3)
       jekyll (>= 3.7, < 5.0)
@@ -157,7 +159,7 @@ GEM
       rubyzip (>= 1.3.0, < 3.0)
     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)
@@ -242,8 +244,6 @@ GEM
     rexml (3.3.0)
       strscan
     rouge (3.26.0)
-    ruby-enum (0.9.0)
-      i18n
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)