diff --git a/.ci/compatibility_tests/docker-compose-pgsql-tls.yaml b/.ci/compatibility_tests/docker-compose-pgsql-tls.yaml
index d3d9d93b5..6bb3d321e 100644
--- a/.ci/compatibility_tests/docker-compose-pgsql-tls.yaml
+++ b/.ci/compatibility_tests/docker-compose-pgsql-tls.yaml
@@ -24,9 +24,9 @@ services:
     image: emqx_pgsql:${PGSQL_TAG}
     restart: always
     environment:
-      POSTGRES_DB: postgres
-      POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: mqtt
+      POSTGRES_USER: root
+      POSTGRES_PASSWORD: public
     ports:
       - "5432:5432"
     command:
diff --git a/.github/workflows/run_cts_tests.yaml b/.github/workflows/run_cts_tests.yaml
index fdca76a7c..5e0335d92 100644
--- a/.github/workflows/run_cts_tests.yaml
+++ b/.github/workflows/run_cts_tests.yaml
@@ -200,9 +200,9 @@ jobs:
               sed -i 's|^[#[:space:]]*auth.pgsql.ssl.tls_versions[ \t]*=.*|auth.pgsql.ssl.tls_versions = tlsv1.2,tlsv1.1|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
           fi
 
-          sed -i 's|^[#[:space:]]*auth.pgsql.username[ \t]*=.*|auth.pgsql.username = postgres|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
-          sed -i 's|^[#[:space:]]*auth.pgsql.password[ \t]*=.*|auth.pgsql.password = postgres|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
-          sed -i 's|^[#[:space:]]*auth.pgsql.database[ \t]*=.*|auth.pgsql.database = postgres|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
+          sed -i 's|^[#[:space:]]*auth.pgsql.username[ \t]*=.*|auth.pgsql.username = root|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
+          sed -i 's|^[#[:space:]]*auth.pgsql.password[ \t]*=.*|auth.pgsql.password = public|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
+          sed -i 's|^[#[:space:]]*auth.pgsql.database[ \t]*=.*|auth.pgsql.database = mqtt|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
           sed -i 's|^[#[:space:]]*auth.pgsql.ssl[ \t]*=.*|auth.pgsql.ssl = on|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
           sed -i 's|^[#[:space:]]*auth.pgsql.cacertfile[ \t]*=.*|auth.pgsql.cacertfile = /emqx/apps/emqx_auth_pgsql/test/emqx_auth_pgsql_SUITE_data/root.crt|g' apps/emqx_auth_pgsql/etc/emqx_auth_pgsql.conf
       - name: setup