diff --git a/lib/github-pages/configuration.rb b/lib/github-pages/configuration.rb
index f1759a74..f4263e5b 100644
--- a/lib/github-pages/configuration.rb
+++ b/lib/github-pages/configuration.rb
@@ -153,7 +153,7 @@ def restrict_and_config_markdown_processor(config)
         config["markdown"] = "CommonMarkGhPages"
         config["commonmark"] = {
           "extensions" => %w(table strikethrough autolink tagfilter),
-          "options" => %w(footnotes),
+          "options" => %w(unsafe footnotes),
         }
       end
 
diff --git a/spec/github-pages/configuration_spec.rb b/spec/github-pages/configuration_spec.rb
index 36137e17..f9ced55a 100644
--- a/spec/github-pages/configuration_spec.rb
+++ b/spec/github-pages/configuration_spec.rb
@@ -83,7 +83,7 @@
           expect(effective_config["markdown"]).to eql("CommonMarkGhPages")
           expect(effective_config["commonmark"]).to eql(
             "extensions" => %w(table strikethrough autolink tagfilter),
-            "options" => %w(footnotes)
+            "options" => %w(unsafe footnotes)
           )
         end
       end