diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9a841ba7..81eab2e95 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Add missing entries to `data_view.field_formats.params` ([#1001](https://github.com/elastic/terraform-provider-elasticstack/pull/1001))
 - Fix namespaces inconsistency when creating elasticstack_kibana_data_view resources ([#1011](https://github.com/elastic/terraform-provider-elasticstack/pull/1011))
 - Update rule ID documentation. ([#1047](https://github.com/elastic/terraform-provider-elasticstack/pull/1047))
+- Mark `elasticstack_kibana_action_connector.secrets` as sensitive. ([#1045](https://github.com/elastic/terraform-provider-elasticstack/pull/1045)
 
 ## [0.11.13] - 2025-01-09
 
diff --git a/docs/resources/kibana_action_connector.md b/docs/resources/kibana_action_connector.md
index a9706c462..a15f906d0 100644
--- a/docs/resources/kibana_action_connector.md
+++ b/docs/resources/kibana_action_connector.md
@@ -66,7 +66,7 @@ resource "elasticstack_kibana_action_connector" "slack-api-connector" {
 
 - `config` (String) The configuration for the connector. Configuration properties vary depending on the connector type.
 - `connector_id` (String) A UUID v1 or v4 to use instead of a randomly generated ID.
-- `secrets` (String) The secrets configuration for the connector. Secrets configuration properties vary depending on the connector type.
+- `secrets` (String, Sensitive) The secrets configuration for the connector. Secrets configuration properties vary depending on the connector type.
 - `space_id` (String) An identifier for the space. If space_id is not provided, the default space is used.
 
 ### Read-Only
diff --git a/internal/kibana/connector.go b/internal/kibana/connector.go
index e44227fd1..37d86c333 100644
--- a/internal/kibana/connector.go
+++ b/internal/kibana/connector.go
@@ -52,6 +52,7 @@ func ResourceActionConnector() *schema.Resource {
 			Optional:         true,
 			DiffSuppressFunc: utils.DiffJsonSuppress,
 			ValidateFunc:     validation.StringIsJSON,
+			Sensitive:        true,
 		},
 		"is_deprecated": {
 			Description: "Indicates whether the connector type is deprecated.",