diff --git a/Gemfile b/Gemfile
index a8ff70a47..a32743a0a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source 'https://rubygems.org'
 
 # Build and doc tools
 gem 'rake', '~> 13.0', require: false
-gem 'yard', '~> 0.9.26', require: false
+gem 'yard', '~> 0.9.28', require: false
 
 # Test tools
 gem 'addressable', '~> 2.8', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index a85520b80..b58260f2b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -263,7 +263,8 @@ GEM
     webrick (1.7.0)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    yard (0.9.26)
+    yard (0.9.28)
+      webrick (~> 1.7.0)
     zeitwerk (2.4.2)
 
 PLATFORMS
@@ -296,7 +297,7 @@ DEPENDENCIES
   sinatra (>= 2.0.0.beta2)
   slim (>= 2.0)
   therubyrhino (>= 2.0)
-  yard (~> 0.9.26)
+  yard (~> 0.9.28)
 
 BUNDLED WITH
    2.2.3