diff --git a/databases/scripts/create-pipeline-admin.sql b/databases/scripts/create-pipeline-admin.sql
new file mode 100644
index 0000000..15739e8
--- /dev/null
+++ b/databases/scripts/create-pipeline-admin.sql
@@ -0,0 +1,37 @@
+-- Create pipeline_admin user for existing database
+-- This script can be run manually on existing PostgreSQL instances
+
+-- Create pipeline_admin user if it doesn't exist
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT FROM pg_catalog.pg_roles WHERE rolname = 'pipeline_admin') THEN
+        CREATE USER pipeline_admin WITH PASSWORD 'secure_pipeline_2024';
+        RAISE NOTICE 'Created user pipeline_admin';
+    ELSE
+        -- Update password in case it's different
+        ALTER USER pipeline_admin WITH PASSWORD 'secure_pipeline_2024';
+        RAISE NOTICE 'Updated password for existing user pipeline_admin';
+    END IF;
+END
+$$;
+
+-- Ensure pipeline_admin has superuser privileges (needed for migrations)
+ALTER USER pipeline_admin WITH SUPERUSER;
+
+-- Grant all privileges on existing databases
+GRANT ALL PRIVILEGES ON DATABASE postgres TO pipeline_admin;
+GRANT ALL PRIVILEGES ON DATABASE dev_pipeline TO pipeline_admin;
+
+-- Connect to dev_pipeline and grant schema permissions
+\c dev_pipeline;
+GRANT ALL ON SCHEMA public TO pipeline_admin;
+GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO pipeline_admin;
+GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA public TO pipeline_admin;
+GRANT ALL PRIVILEGES ON ALL FUNCTIONS IN SCHEMA public TO pipeline_admin;
+
+-- Set default privileges for future objects
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO pipeline_admin;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO pipeline_admin;
+ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON FUNCTIONS TO pipeline_admin;
+
+\echo 'Pipeline admin user setup completed successfully'
diff --git a/databases/scripts/init.sql b/databases/scripts/init.sql
index 856ce32..baac1ef 100644
--- a/databases/scripts/init.sql
+++ b/databases/scripts/init.sql
@@ -6,6 +6,14 @@ CREATE DATABASE dev_pipeline;
 -- Create users
 CREATE USER n8n_user WITH PASSWORD 'n8n_secure_2024';
 CREATE USER gitea_user WITH PASSWORD 'gitea_secure_2024';
+-- Create pipeline_admin user if it doesn't exist
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT FROM pg_catalog.pg_roles WHERE rolname = 'pipeline_admin') THEN
+        CREATE USER pipeline_admin WITH PASSWORD 'secure_pipeline_2024';
+    END IF;
+END
+$$;
 
 -- Grant permissions
 GRANT ALL PRIVILEGES ON DATABASE n8n_db TO n8n_user;
diff --git a/docker-compose.yml b/docker-compose.yml
index a3c262d..5cbbe59 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,6 +12,7 @@ services:
       POSTGRES_DB: dev_pipeline
     volumes:
       - postgres_data:/var/lib/postgresql/data
+      - ./databases/scripts/init.sql:/docker-entrypoint-initdb.d/init.sql
     ports:
       - "5432:5432"
     networks:
diff --git a/scripts/fix-postgres-user.sh b/scripts/fix-postgres-user.sh
new file mode 100644
index 0000000..1b01764
--- /dev/null
+++ b/scripts/fix-postgres-user.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Fix PostgreSQL user creation for existing deployments
+# This script creates the pipeline_admin user in an existing PostgreSQL container
+
+echo "🔧 Fixing PostgreSQL user authentication..."
+
+# Wait for PostgreSQL to be ready
+echo "⏳ Waiting for PostgreSQL to be ready..."
+until docker exec pipeline_postgres pg_isready -U postgres > /dev/null 2>&1; do
+    echo "   PostgreSQL is not ready yet, waiting..."
+    sleep 2
+done
+
+echo "✅ PostgreSQL is ready"
+
+# Execute the user creation script
+echo "👤 Creating pipeline_admin user..."
+docker exec -i pipeline_postgres psql -U postgres -d postgres < ./databases/scripts/create-pipeline-admin.sql
+
+if [ $? -eq 0 ]; then
+    echo "✅ Pipeline admin user created successfully"
+    echo "🚀 You can now restart the migrations service:"
+    echo "   docker compose restart migrations"
+else
+    echo "❌ Failed to create pipeline admin user"
+    exit 1
+fi