diff --git a/ports/stm32/boards/ARDUINO_GIGA/manifest.py b/ports/stm32/boards/ARDUINO_GIGA/manifest.py
index 1db4b8054c..b3c6b02e5b 100644
--- a/ports/stm32/boards/ARDUINO_GIGA/manifest.py
+++ b/ports/stm32/boards/ARDUINO_GIGA/manifest.py
@@ -5,6 +5,7 @@ require("bundle-networking")
 
 # Utils
 require("time")
+require("senml")
 require("logging")
 
 # Bluetooth
diff --git a/ports/stm32/boards/ARDUINO_NICLA_VISION/manifest.py b/ports/stm32/boards/ARDUINO_NICLA_VISION/manifest.py
index 1db4b8054c..b3c6b02e5b 100644
--- a/ports/stm32/boards/ARDUINO_NICLA_VISION/manifest.py
+++ b/ports/stm32/boards/ARDUINO_NICLA_VISION/manifest.py
@@ -5,6 +5,7 @@ require("bundle-networking")
 
 # Utils
 require("time")
+require("senml")
 require("logging")
 
 # Bluetooth
diff --git a/ports/stm32/boards/ARDUINO_PORTENTA_H7/manifest.py b/ports/stm32/boards/ARDUINO_PORTENTA_H7/manifest.py
index 1db4b8054c..b3c6b02e5b 100644
--- a/ports/stm32/boards/ARDUINO_PORTENTA_H7/manifest.py
+++ b/ports/stm32/boards/ARDUINO_PORTENTA_H7/manifest.py
@@ -5,6 +5,7 @@ require("bundle-networking")
 
 # Utils
 require("time")
+require("senml")
 require("logging")
 
 # Bluetooth