diff --git a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_c6 b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_c6
index f0198c840e..c4abd6d670 100644
--- a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_c6
+++ b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_c6
@@ -4,3 +4,4 @@ CONFIG_OPENTHREAD_NETWORK_CHANNEL=12
 CONFIG_OPENTHREAD_NETWORK_MASTERKEY="aabbccddeeff00112233445566778899"
 CONFIG_ESP_SLEEP_DEBUG=y
 CONFIG_LOG_MAXIMUM_LEVEL_DEBUG=y
+CONFIG_ESP_SLEEP_CACHE_SAFE_ASSERTION=y
diff --git a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_h2 b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_h2
index 4afe327821..b7fa32376f 100644
--- a/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_h2
+++ b/examples/openthread/ot_sleepy_device/light_sleep/sdkconfig.ci.sleepy_h2
@@ -4,3 +4,4 @@ CONFIG_OPENTHREAD_NETWORK_CHANNEL=12
 CONFIG_OPENTHREAD_NETWORK_MASTERKEY="aabbccddeeff00112233445566778899"
 CONFIG_ESP_SLEEP_DEBUG=y
 CONFIG_LOG_MAXIMUM_LEVEL_DEBUG=y
+CONFIG_ESP_SLEEP_CACHE_SAFE_ASSERTION=y