diff --git a/docs/hosting/configuration/environment-variables/database.md b/docs/hosting/configuration/environment-variables/database.md
index 21447aeaf..8aaa98b03 100644
--- a/docs/hosting/configuration/environment-variables/database.md
+++ b/docs/hosting/configuration/environment-variables/database.md
@@ -31,6 +31,7 @@ This page outlines environment variables to configure your chosen database for y
 | `DB_POSTGRESDB_PORT`<br>/`_FILE` | Number | `5432` | The PostgreSQL port. |
 | `DB_POSTGRESDB_USER`<br>/`_FILE` | String | `postgres` | The PostgreSQL user. |
 | `DB_POSTGRESDB_PASSWORD`<br>/`_FILE` | String | - | The PostgreSQL password. |
+| `DB_POSTGRESDB_POOL_SIZE`<br>/`_FILE` | Number | 2 | Control how many parallel open Postgres connections n8n should have. Increasing it may help with resource utilization, but too many connections may degrade performance. |
 | `DB_POSTGRESDB_SCHEMA`<br>/`_FILE` | String | `public` | The PostgreSQL schema. |
 | `DB_POSTGRESDB_SSL_CA`<br>/`_FILE` | String | - | The PostgreSQL SSL certificate authority. |
 | `DB_POSTGRESDB_SSL_CERT`<br>/`_FILE` | String | - | The PostgreSQL SSL certificate. |