diff --git a/sql/hstore_compatability_9_0.sql b/sql/hstore_compatability_9_0.sql
new file mode 100644
index 00000000..088dd792
--- /dev/null
+++ b/sql/hstore_compatability_9_0.sql
@@ -0,0 +1,8 @@
+CREATE OR REPLACE FUNCTION hstore(k text, v text) RETURNS HSTORE
+  AS $$
+DECLARE
+BEGIN
+  RETURN k => v;
+END;
+$$
+LANGUAGE plpgsql IMMUTABLE;