diff --git a/charts/prefect-worker/README.md b/charts/prefect-worker/README.md
index 572fb98..e36d47e 100644
--- a/charts/prefect-worker/README.md
+++ b/charts/prefect-worker/README.md
@@ -298,6 +298,7 @@ Please note that configuring the template via `baseJobTemplate.existingConfigMap
 | worker.initContainer.containerSecurityContext.readOnlyRootFilesystem | bool | `true` | set init containers' security context readOnlyRootFilesystem |
 | worker.initContainer.containerSecurityContext.runAsNonRoot | bool | `true` | set init containers' security context runAsNonRoot |
 | worker.initContainer.containerSecurityContext.runAsUser | int | `1001` | set init containers' security context runAsUser |
+| worker.initContainer.extraContainers | list | `[]` | additional sidecar containers |
 | worker.initContainer.resources | object | `{}` | the resource specifications for the sync-base-job-template initContainer Defaults to the resources defined for the worker container |
 | worker.livenessProbe.config.failureThreshold | int | `3` | The number of consecutive failures allowed before considering the probe as failed. |
 | worker.livenessProbe.config.initialDelaySeconds | int | `10` | The number of seconds to wait before starting the first probe. |