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n8n · Environment Variable

N8N_ENCRYPTION_KEY

Set N8N_ENCRYPTION_KEY to choose the key n8n uses to encrypt credentials in its database. In queue mode, configure it for every worker.

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Syntax

N8N_ENCRYPTION_KEY=<SOME RANDOM STRING>

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  • Environment variables reference
  • Queue mode
  • Credentials
  • Configuration examples

Source: Set a custom encryption key | Deploy | n8n Docs. Checked 2026-11-03.