diff --git a/asciidoctor-2.0.18.gem b/asciidoctor-2.0.18.gem
deleted file mode 100644
index 55b5518..0000000
Binary files a/asciidoctor-2.0.18.gem and /dev/null differ
diff --git a/asciidoctor-2.0.20.gem b/asciidoctor-2.0.20.gem
new file mode 100644
index 0000000..988934b
Binary files /dev/null and b/asciidoctor-2.0.20.gem differ
diff --git a/ruby-asciidoctor.spec b/ruby-asciidoctor.spec
index 127d640..e8179a7 100644
--- a/ruby-asciidoctor.spec
+++ b/ruby-asciidoctor.spec
@@ -1,8 +1,8 @@
 %define        gemdir   %(ruby -rrubygems -e'puts Gem.default_dir')
 %define        gemname  %(echo %{name} | sed "s|^ruby-||")
 Name:          ruby-asciidoctor
-Version:       2.0.18
-Release:       3mamba
+Version:       2.0.20
+Release:       1mamba
 Summary:       An implementation of AsciiDoc in Ruby
 Group:         Applications/Publishing
 Vendor:        openmamba
@@ -52,6 +52,9 @@ rm -rf %{buildroot}%{gemdir}/doc/%{gemname}-%{version}
 %doc %{gemname}-%{version}/LICENSE
 
 %changelog
+* Thu May 18 2023 Automatic Build System <autodist@mambasoft.it> 2.0.20-1mamba
+- automatic version update by autodist
+
 * Wed Jan 11 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 2.0.18-3mamba
 - rebuilt with ruby 3.2.0