diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad06246..033528a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,15 @@
 1. requester: Fix response buffer cast in pldm_send_recv()
 2. pdr: Hoist record handle overflow test to avoid memory leak
 
+### Deprecated
+
+1. state-set: Enum pldm_state_set_operational_fault_status_values
+
+   The enum operational_fault_status is defined with wrong members and will
+   eventually be replaced with the correct members. Any uses of
+   pldm_state_set_operational_fault_status_values members should move to
+   equivalent pldm_state_set_operational_stress_status_values members if needed.
+
 ## [0.4.0] - 2023-07-14
 
 ### Added
diff --git a/include/libpldm/state_set.h b/include/libpldm/state_set.h
index 38f5aa1..0e5061c 100644
--- a/include/libpldm/state_set.h
+++ b/include/libpldm/state_set.h
@@ -156,6 +156,13 @@
 	PLDM_STATE_SET_OPERATIONAL_FAULT_STATUS_STRESSED = 2,
 };
 
+/* @brief List of states for the Operational Stress status (ID 9).
+ */
+enum pldm_state_set_operational_stress_status_values {
+	PLDM_STATE_SET_OPERATIONAL_STRESS_STATUS_NORMAL = 1,
+	PLDM_STATE_SET_OPERATIONAL_STRESS_STATUS_STRESSED = 2,
+};
+
 /* @brief List of states for the Operational Running Status state set (ID 11).
  */
 enum pldm_state_set_operational_running_status_values {