diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 20f350e9..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth"]
-	path = third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth
-	url = https://github.com/sakumisu/zephyr_bluetooth.git
diff --git a/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth b/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth
deleted file mode 160000
index 7de2f76a..00000000
--- a/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 7de2f76ae0d6e377071307934312b2523f5d7787
diff --git a/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth/.gitkeep b/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth/.gitkeep
new file mode 100644
index 00000000..7a559553
--- /dev/null
+++ b/third_party/zephyr_bluetooth-2.7.5/zephyr_bluetooth/.gitkeep
@@ -0,0 +1 @@
+https://github.com/sakumisu/zephyr_bluetooth
\ No newline at end of file