diff --git a/src/java/clojure/lang/IReactiveLookup.java b/src/java/clojure/lang/IReactiveLookup.java
new file mode 100644
index 0000000..f4dffa5
--- /dev/null
+++ b/src/java/clojure/lang/IReactiveLookup.java
@@ -0,0 +1,6 @@
+package clojure.lang;
+
+// Not sure if this interface is really a good idea without having full
+// collection change notifications
+public interface IReactiveLookup extends IReactiveRef, ILookup{
+}