n8n-mcp/MEMORY_N8N_UPDATE.md

n8n Update Process - Quick Reference

Quick Steps to Update n8n

When there's a new n8n version available, follow these steps:

# 1. Update n8n dependencies automatically
npm run update:n8n

# 2. Validate the update
npm run validate

# 3. Commit and push
git add -A
git commit -m "chore: update n8n to vX.X.X

- Updated n8n from X.X.X to X.X.X
- Updated n8n-core from X.X.X to X.X.X
- Updated n8n-workflow from X.X.X to X.X.X
- Updated @n8n/n8n-nodes-langchain from X.X.X to X.X.X
- Rebuilt node database with XXX nodes
- Sanitized XXX workflow templates (if present)
- All validation tests passing

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>"
git push origin main

What the Commands Do

npm run update:n8n

This single command:

1. Checks for the latest n8n version
2. Updates n8n and all its required dependencies (n8n-core, n8n-workflow, @n8n/n8n-nodes-langchain)
3. Runs npm install to update package-lock.json
4. Automatically rebuilds the node database
5. Sanitizes any workflow templates to remove API tokens
6. Shows you exactly what versions were updated

npm run validate

• Validates critical nodes (httpRequest, code, slack, agent)
• Shows database statistics
• Confirms everything is working correctly

Important Notes

1. Always run on main branch - Make sure you're on main and it's clean
2. The update script is smart - It automatically syncs all n8n dependencies to compatible versions
3. Database rebuild is automatic - The update script handles this for you
4. Template sanitization is automatic - Any API tokens in workflow templates are replaced with placeholders
5. Docker image builds automatically - Pushing to GitHub triggers the workflow

GitHub Push Protection

As of July 2025, GitHub's push protection may block database pushes if they contain API tokens in workflow templates. Our rebuild process now automatically sanitizes these tokens, but if you encounter push protection errors:

1. Make sure you've run the latest rebuild with npm run rebuild
2. Verify sanitization with npm run sanitize:templates
3. If push is still blocked, use the GitHub web interface to review and allow the push

Time Estimate

• Total time: ~3-5 minutes
• Most time is spent on npm install and database rebuild
• The actual commands take seconds to run

Troubleshooting

If validation fails:

1. Check the error message - usually it's a node type reference issue
2. The update script handles most compatibility issues automatically
3. If needed, check the GitHub Actions logs for the dependency update workflow

Alternative: Check First

To see what would be updated without making changes:

npm run update:n8n:check

This shows you the available updates without modifying anything.