diff --git a/.gitmodules b/.gitmodules
index 18118e5..21c3758 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "lib/tinyusb"]
 	path = lib/tinyusb
 	url = https://mirrors.spacecruft.org/hathach/tinyusb
+[submodule "lib/nrfx"]
+	path = lib/nrfx
+	url = https://mirrors.spacecruft.org/NordicSemiconductor/nrfx
diff --git a/lib/nrfx b/lib/nrfx
new file mode 160000
index 0000000..b539906
--- /dev/null
+++ b/lib/nrfx
@@ -0,0 +1 @@
+Subproject commit b5399066bd7f3dc32ee15510d06ef7137bcacf36