diff --git a/docker/with-external-db/logto.env b/docker/with-external-db/logto.env
index cb53258b..4a9ab004 100644
--- a/docker/with-external-db/logto.env
+++ b/docker/with-external-db/logto.env
@@ -4,6 +4,6 @@ ADMIN_PORT="3002"
 ADMIN_DISABLE_LOCALHOST="false"
 ENDPOINT=""
 NPM_CONFIG_LOGLEVEL="warn"
-DB_URL="postgres://postgres:password@postgres:5432/logto?sslmode=require"
+DB_URL="postgres://postgres:password@postgres:5432/logto"
 ADMIN_ENDPOINT=""
 NODE_ENV="production"
diff --git a/docker/with-external-db/pg-init-scripts/add-db-cert.sh b/docker/with-external-db/pg-init-scripts/add-db-cert.sh
deleted file mode 100644
index 3c43a011..00000000
--- a/docker/with-external-db/pg-init-scripts/add-db-cert.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/bash
-
-set -euo pipefail
-
-# Create blank custom CA certificate file
-touch /usr/local/share/ca-certificates/external-db-cert.crt
-
-# Insert custom CA certificate contents from environment variable into file
-echo "$EXTERNAL_DB_CERT" | tee /usr/local/share/ca-certificates/external-db-cert.crt > /dev/null
-
-# Update CA certificates
-update-ca-certificates
diff --git a/docker/with-external-db/postgres.env b/docker/with-external-db/postgres.env
index bc551fd4..304e2fbe 100644
--- a/docker/with-external-db/postgres.env
+++ b/docker/with-external-db/postgres.env
@@ -1,5 +1,3 @@
 POSTGRES_USER="postgres"
 POSTGRES_PASSWORD="password"
 POSTGRES_MULTIPLE_DATABASES="app,logto"
-EXTERNAL_DB_CERT="-----BEGIN CERTIFICATE-----MIIC....eRiu-----END CERTIFICATE-----"
-EXTERNAL_DB_CERT_KEY="<DB certificate private key contents>"
diff --git a/docker/with-external-db/with-db.env b/docker/with-external-db/with-db.env
index 56d98b87..7abafbe2 100644
--- a/docker/with-external-db/with-db.env
+++ b/docker/with-external-db/with-db.env
@@ -7,9 +7,9 @@ ALLOWED_ORIGINS="http://localhost:3000"
 
 # Environment variables for External KMS
 ENABLE_EXTERNAL_DB="true"
-EXTERNAL_DB_CONNECTION_URL="postgres://postgres:password@postgres:5432/app?sslmode=require"
+EXTERNAL_DB_CONNECTION_URL="postgres://postgres:password@postgres:5432/app"
 EXTERNAL_DB_ENCRYPTION_KEY="<db-encryption-key>"
-EXTERNAL_DB_CERT="-----BEGIN CERTIFICATE-----MIIC....eRiu-----END CERTIFICATE-----"
+# EXTERNAL_DB_CERT="-----BEGIN CERTIFICATE-----MIIC....eRiu-----END CERTIFICATE-----"
 
 # Environment variables for LogTo
 ENABLE_AUTHENTICATION="true"