diff --git a/srclibs/wasi-sdk.yml b/srclibs/wasi-sdk.yml
new file mode 100644
index 0000000000..41b7cb8072
--- /dev/null
+++ b/srclibs/wasi-sdk.yml
@@ -0,0 +1,4 @@
+RepoType: git
+Repo: https://github.com/WebAssembly/wasi-sdk.git
+Prepare: |
+  git submodule update --init