diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index b884e7955..c7bb552f1 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -16,7 +16,7 @@
         dcs_type: "{{ ['etcd', 'consul'] | random }}" # Set 'dcs_type' to either 'etcd' or 'consul' randomly
         consul_node_role: server # if dcs_type: "consul"
         consul_bootstrap_expect: true # if dcs_type: "consul"
-        postgresql_version: "15" # to test custom WAL dir
+        postgresql_version: "16" # to test custom WAL dir
         pgbouncer_processes: 2 # Test multiple pgbouncer processes (so_reuseport)
         cacheable: true
       delegate_to: localhost
diff --git a/vars/main.yml b/vars/main.yml
index d59dd37b7..57d6a9a9e 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -142,7 +142,7 @@ consul_services:
 
 
 # PostgreSQL variables
-postgresql_version: "15"
+postgresql_version: "16"
 # postgresql_data_dir: see vars/Debian.yml or vars/RedHat.yml
 postgresql_port: "5432"
 postgresql_encoding: "UTF8"  # for bootstrap only (initdb)