diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..deaba72
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,17 @@
+name: "toolchain/jdk/jdk9"
+description:
+    "Source for OpenJDK9."
+
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "http://openjdk.java.net/"
+  }
+  url {
+    type: HG
+    value: "http://hg.openjdk.java.net/jdk9/dev"
+  }
+  version: "jdk-9+181"
+  last_upgrade_date { year: 2017 month: 9 day: 28 }
+  license_type: RESTRICTED
+}