diff --git a/.gitmodules b/.gitmodules
index 9a3f4740e7..e69de29bb2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +0,0 @@
-[submodule "sdk/dotnent-sdk"]
-	path = sdk/dotnent-sdk
-	url = https://github.com/layotto/dotnet-sdk
-[submodule "sdk/js-sdk"]
-	path = sdk/js-sdk
-	url = https://github.com/layotto/js-sdk
diff --git a/sdk/dotnent-sdk b/sdk/dotnent-sdk
deleted file mode 160000
index ad28c7e357..0000000000
--- a/sdk/dotnent-sdk
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ad28c7e357b4e9cce7a769e12f9615bc27cbbcc9
diff --git a/sdk/dotnet-sdk/README.md b/sdk/dotnet-sdk/README.md
new file mode 100644
index 0000000000..2c931eee66
--- /dev/null
+++ b/sdk/dotnet-sdk/README.md
@@ -0,0 +1,2 @@
+## dotnet-sdk
+Please visit https://github.com/layotto/dotnet-sdk
\ No newline at end of file
diff --git a/sdk/js-sdk b/sdk/js-sdk
deleted file mode 160000
index 6cbd0c79b7..0000000000
--- a/sdk/js-sdk
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 6cbd0c79b7b5590153a700fcb3f4dc4e5ea8a4e9
diff --git a/sdk/js-sdk/README.md b/sdk/js-sdk/README.md
new file mode 100644
index 0000000000..11be8973ee
--- /dev/null
+++ b/sdk/js-sdk/README.md
@@ -0,0 +1,2 @@
+## js-sdk
+Please visit https://github.com/layotto/js-sdk
\ No newline at end of file