diff --git a/.cargo/config b/.cargo/config.toml
similarity index 100%
rename from .cargo/config
rename to .cargo/config.toml
diff --git a/.gitmodules b/.gitmodules
index f4f86c9..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "rustlib"]
-	path = rustlib
-	url = https://github.com/metaverse-kernel/rustenv.git
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 292fe49..5d56faf 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "stable"
+channel = "nightly"
diff --git a/rustlib b/rustlib
deleted file mode 160000
index bb4a5d1..0000000
--- a/rustlib
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit bb4a5d1b55c36070d629400bddd6d267d2f0714a