diff --git a/README.md b/README.md
index b7b7424..3baf37a 100644
--- a/README.md
+++ b/README.md
@@ -128,3 +128,10 @@ XXX Appears to include non-free "5-Clause Nordic License". `:|`
 
 * https://wasp-os.readthedocs.io/en/latest/five-clause-nordic.html
 
+
+* https://infocenter.nordicsemi.com/index.jsp?topic=%2Fstruct_nrf52%2Fstruct%2Fnrf52_softdevices.html
+"A SoftDevice is a precompiled and linked binary software implementing a wireless protocol developed by Nordic Semiconductor."
+
+* Non-free code gets pulled in via this build script:
+`micropython/ports/nrf/drivers/bluetooth/download_ble_stack.sh`
+