diff --git a/library/roles/postfix/templates/main.cf.j2 b/library/roles/postfix/templates/main.cf.j2
index fd72c28e..4501ebb1 100644
--- a/library/roles/postfix/templates/main.cf.j2
+++ b/library/roles/postfix/templates/main.cf.j2
@@ -766,4 +766,8 @@ smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
 # Client
 smtp_tls_security_level = {{ postfix_smtp_tls_security_level }}
 smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
-
+{% if ansible_distribution_file_variety == "Debian" %}
+{% if ansible_distribution_version is version_compare('18.04', '>=') %}
+compatibility_level=2
+{% endif %}
+{% endif %}