diff --git a/Gemfile.lock b/Gemfile.lock
index f679175..80ac2fc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    md_to_pdf (0.0.20)
+    md_to_pdf (0.0.21)
       front_matter_parser (~> 1.0)
       json-schema (~> 4.1)
       markly (~> 0.7)
diff --git a/lib/md_to_pdf/version.rb b/lib/md_to_pdf/version.rb
index 28648da..9660994 100644
--- a/lib/md_to_pdf/version.rb
+++ b/lib/md_to_pdf/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module MarkdownToPDF
-  VERSION = '0.0.20'
+  VERSION = '0.0.21'
 end