diff --git a/bin/wkhtmltopdf b/bin/wkhtmltopdf
index 580b195..216aa62 100755
--- a/bin/wkhtmltopdf
+++ b/bin/wkhtmltopdf
@@ -53,7 +53,7 @@ suffix = case RbConfig::CONFIG['host_os']
            os = 'centos_7' if (os.start_with?('amzn_2') && !os.start_with?('amzn_20')) ||
                               os.start_with?('rhel_7.')
 
-           os = 'centos_8' if os.start_with?('rocky_8') ||
+           os = 'centos_8' if os.start_with?('rocky_8') || os.start_with?('centos_9') ||
                               os.start_with?('rhel_8.') ||
                               os.start_with?('ol_8.') ||
                               os.start_with?('almalinux_8') ||