diff --git a/etc/cmake/options.cmake b/etc/cmake/options.cmake
index 77be9cb34..0658a1698 100644
--- a/etc/cmake/options.cmake
+++ b/etc/cmake/options.cmake
@@ -349,6 +349,7 @@ ot_int_option(OT_LOG_MAX_SIZE OPENTHREAD_CONFIG_LOG_MAX_SIZE "set maximum log st
 ot_int_option(OT_MAC_CSL_REQUEST_AHEAD_US OPENTHREAD_CONFIG_MAC_CSL_REQUEST_AHEAD_US "set time ahead to deliver CSL frame from MAC to SubMac in microseconds")
 ot_int_option(OT_MLE_MAX_CHILDREN OPENTHREAD_CONFIG_MLE_MAX_CHILDREN "set maximum number of children")
 ot_int_option(OT_RCP_RESTORATION_MAX_COUNT OPENTHREAD_SPINEL_CONFIG_RCP_RESTORATION_MAX_COUNT "set max RCP restoration count")
+ot_int_option(OT_RCP_TIME_SYNC_INTERVAL OPENTHREAD_SPINEL_CONFIG_RCP_TIME_SYNC_INTERVAL "set host-RCP time sync interval in microseconds")
 ot_int_option(OT_RCP_TX_WAIT_TIME_SECS OPENTHREAD_SPINEL_CONFIG_RCP_TX_WAIT_TIME_SECS "set RCP TX wait TIME in seconds")
 
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