diff --git a/metadata.json b/metadata.json
index 9dfec547ad..ef7c4701e3 100644
--- a/metadata.json
+++ b/metadata.json
@@ -38,13 +38,15 @@
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
         "7",
-        "8"
+        "8",
+        "9"
       ]
     },
     {
       "operatingsystem": "OracleLinux",
       "operatingsystemrelease": [
-        "7"
+        "7",
+        "9"
       ]
     },
     {
@@ -79,13 +81,15 @@
     {
       "operatingsystem": "Rocky",
       "operatingsystemrelease": [
-        "8"
+        "8",
+        "9"
       ]
     },
     {
       "operatingsystem": "AlmaLinux",
       "operatingsystemrelease": [
-        "8"
+        "8",
+        "9"
       ]
     }
   ],
diff --git a/spec/acceptance/server_instance_spec.rb b/spec/acceptance/server_instance_spec.rb
index d00ce95f83..260266981a 100644
--- a/spec/acceptance/server_instance_spec.rb
+++ b/spec/acceptance/server_instance_spec.rb
@@ -3,7 +3,7 @@
 # run a test task
 require 'spec_helper_acceptance'
 
-describe 'postgresql instance test1', if: os[:family] == 'redhat' && os[:release].start_with?('8') do
+describe 'postgresql instance test1', if: os[:family] == 'redhat' && !os[:release].start_with?('7') do
   pp = <<-MANIFEST
   # set global defaults
   class { 'postgresql::globals':