diff --git a/config/git/pico-serprog b/config/git/pico-serprog
index 2b07f75..6d46566 100644
--- a/config/git/pico-serprog
+++ b/config/git/pico-serprog
@@ -4,12 +4,4 @@
 	url: https://codeberg.org/libreboot/pico-serprog
 	bkup_url: https://git.disroot.org/libreboot/pico-serprog
 	depend: pico-sdk
-	depend: rpi-pico-tinyusb
-}
-
-{rpi-pico-tinyusb}{
-	rev: 86c416d4c0fb38432460b3e11b08b9de76941bf5
-	loc: pico-sdk/lib/tinyusb
-	url: https://codeberg.org/libreboot/tinyusb
-	bkup_url: https://github.com/hathach/tinyusb.git
 }
diff --git a/config/submodule/pico-sdk/module.list b/config/submodule/pico-sdk/module.list
new file mode 100644
index 0000000..6b4010a
--- /dev/null
+++ b/config/submodule/pico-sdk/module.list
@@ -0,0 +1 @@
+lib/tinyusb
diff --git a/config/submodule/pico-sdk/tinyusb/module.cfg b/config/submodule/pico-sdk/tinyusb/module.cfg
new file mode 100644
index 0000000..68798da
--- /dev/null
+++ b/config/submodule/pico-sdk/tinyusb/module.cfg
@@ -0,0 +1,3 @@
+subrev="86c416d4c0fb38432460b3e11b08b9de76941bf5"
+subrepo="https://codeberg.org/libreboot/tinyusb"
+subrepo_bkup="https://github.com/hathach/tinyusb.git"