diff --git a/.gitmodules b/.gitmodules
index a578539f..47da97d4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -526,3 +526,6 @@
 [submodule "libraries/helpers/jwt"]
 	path = libraries/helpers/jwt
 	url = https://github.com/adafruit/Adafruit_CircuitPython_JWT.git
+[submodule "libraries/helpers/GC_IOT_Core"]
+	path = libraries/helpers/GC_IOT_Core
+	url = https://github.com/adafruit/Adafruit_CircuitPython_GC_IOT_Core.git
diff --git a/docs/drivers.rst b/docs/drivers.rst
index f58f0a1d..c328d680 100644
--- a/docs/drivers.rst
+++ b/docs/drivers.rst
@@ -45,6 +45,7 @@ These libraries build on top of the low level APIs to simplify common tasks.
     Bluefruit LE Connect App <https://circuitpython.readthedocs.io/projects/bluefruitconnect/en/latest/>
     Bluetooth Low Energy (BLE) <https://circuitpython.readthedocs.io/projects/ble/en/latest/>
     Board Test Suite <https://circuitpython.readthedocs.io/projects/boardtest/en/latest/>
+    Google Cloud IoT Core <https://circuitpython.readthedocs.io/projects/gc_iot_core/en/latest/>
     Cursor Control <https://circuitpython.readthedocs.io/projects/cursorcontrol/en/latest/>
     DC Motor and Servo <https://circuitpython.readthedocs.io/projects/motor/en/latest/>
     Debouncer <https://circuitpython.readthedocs.io/projects/debouncer/en/latest/>
diff --git a/libraries/helpers/GC_IOT_Core b/libraries/helpers/GC_IOT_Core
new file mode 160000
index 00000000..6307e5c5
--- /dev/null
+++ b/libraries/helpers/GC_IOT_Core
@@ -0,0 +1 @@
+Subproject commit 6307e5c54f84c586cb99ca99b740c1f7d5df8d99