diff --git a/host_vars/prodnso-postgres-01.yml b/host_vars/prodnso-postgres-01.yml
index ae5d8f1..fd65816 100644
--- a/host_vars/prodnso-postgres-01.yml
+++ b/host_vars/prodnso-postgres-01.yml
@@ -1,3 +1,4 @@
 ---
 
+hetzner_server_type: cpx21
 server_type: "master"
diff --git a/host_vars/prodnso-postgres-02.yml b/host_vars/prodnso-postgres-02.yml
index 39e2488..ed431e3 100644
--- a/host_vars/prodnso-postgres-02.yml
+++ b/host_vars/prodnso-postgres-02.yml
@@ -1,3 +1,4 @@
 ---
 
+hetzner_server_type: cpx21
 server_type: "slave"