diff --git a/.gitmodules b/.gitmodules
index 3362621..04c90a6 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "docs/external/doxygen-awesome-css"]
 	path = docs/external/doxygen-awesome-css
 	url = https://github.com/jothepro/doxygen-awesome-css
+[submodule "bootloader"]
+	path = bootloader
+	url = https://github.com/adafruit/tinyuf2.git
diff --git a/bootloader b/bootloader
new file mode 160000
index 0000000..0bf633b
--- /dev/null
+++ b/bootloader
@@ -0,0 +1 @@
+Subproject commit 0bf633be000a2b62796e071a18b93c1018d3e369