diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..2571e36c6
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "tests"]
+	path = tests
+	url = https://github.com/ethereum/tests
diff --git a/tests b/tests
new file mode 160000
index 000000000..2e4987ad2
--- /dev/null
+++ b/tests
@@ -0,0 +1 @@
+Subproject commit 2e4987ad2a973e2cf85ef742a8b9bd094363cd18