diff --git a/charts/substra-backend/README.md b/charts/substra-backend/README.md
index 4085376a0..655c96bc3 100644
--- a/charts/substra-backend/README.md
+++ b/charts/substra-backend/README.md
@@ -235,6 +235,7 @@ See [UPGRADE.md](https://github.com/Substra/substra-backend/blob/main/charts/sub
 | `builder.enabled`                       | Enable builder service                                                                                                                             | `true`                    |
 | `builder.replicaCount`                  | Replica count for the builder service                                                                                                              | `1`                       |
 | `builder.concurrency`                   | Maximum amount of tasks to process in parallel                                                                                                     | `1`                       |
+| `builder.timeout`                       | Number of seconds to wait before failing a build                                                                                                   | `3600`                    |
 | `builder.kanikoStartup.maxAttempts`     | Number of checks done before considering a kaniko pod has failed to spawn                                                                          | `60`                      |
 | `builder.kanikoStartup.checkDelay`      | Time, in seconds, to wait when a container is in pending state before checking again its status                                                    | `2`                       |
 | `builder.image.registry`                | Substra backend server image registry                                                                                                              | `ghcr.io`                 |