diff --git a/NuttX b/NuttX
index 3c36467c0d..255dc96065 160000
--- a/NuttX
+++ b/NuttX
@@ -1 +1 @@
-Subproject commit 3c36467c0d5572431a09ae50013328a4693ee070
+Subproject commit 255dc96065ce1fdd7f0f56ca5afb6b6112abfc70
diff --git a/nuttx-configs/px4fmu-v2/nsh/defconfig b/nuttx-configs/px4fmu-v2/nsh/defconfig
index 50d5b0296e..af6634f563 100644
--- a/nuttx-configs/px4fmu-v2/nsh/defconfig
+++ b/nuttx-configs/px4fmu-v2/nsh/defconfig
@@ -477,7 +477,9 @@ CONFIG_SPI=y
 # CONFIG_SPI_OWNBUS is not set
 CONFIG_SPI_EXCHANGE=y
 # CONFIG_SPI_CMDDATA is not set
-# CONFIG_RTC is not set
+CONFIG_RTC=y
+CONFIG_RTC_DATETIME=y
+CONFIG_RTC_LSICLOCK=y
 CONFIG_WATCHDOG=y
 # CONFIG_ANALOG is not set
 # CONFIG_AUDIO_DEVICES is not set