diff --git a/docs/reference/cluster_manifest.md b/docs/reference/cluster_manifest.md
index ab0353202..1243e28d3 100644
--- a/docs/reference/cluster_manifest.md
+++ b/docs/reference/cluster_manifest.md
@@ -588,6 +588,9 @@ for both master and replica pooler services (if `enableReplicaConnectionPooler`
   User to create for connection pooler to be able to connect to a database.
   You can also choose a role from the `users` section or a system user role.
 
+* **imagePullSecrets**
+  References an existing Kubernetes secret to use when pulling a custom pooler image.
+
 * **dockerImage**
   Which docker image to use for connection pooler deployment.