diff --git a/Gemfile.lock b/Gemfile.lock
index 9a1baec..4d48619 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.4)
+    commonmarker (0.17.13)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.8)
     dnsruby (1.61.5)
@@ -124,7 +124,7 @@ GEM
       commonmarker (~> 0.14)
       jekyll (>= 3.7, < 5.0)
     jekyll-commonmark-ghpages (0.1.6)
-      commonmarker (~> 0.23.4)
+      commonmarker (~> 0.17.6)
       jekyll-commonmark (~> 1.2)
       rouge (>= 2.0, < 4.0)
     jekyll-default-layout (0.1.4)
@@ -224,7 +224,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     minitest (5.14.4)
     multipart-post (2.1.1)
-    nokogiri (1.13.6)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     octokit (4.20.0)