diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..854384f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "dev-test/spec"]
+	path = dev-test/spec
+	url = https://github.com/WebAssembly/testsuite
diff --git a/dev-test/spec b/dev-test/spec
new file mode 160000
index 0000000..5fddf13
--- /dev/null
+++ b/dev-test/spec
@@ -0,0 +1 @@
+Subproject commit 5fddf13f296cb08a7a8055f4f6d63632485cab14