diff --git a/Makefile b/Makefile
index 151567d..ab4f6ea 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,9 @@ OBJS = \
 PGFILEDESC = "pg_ivm - incremental view maintenance on PostgreSQL"
 
 EXTENSION = pg_ivm
-DATA = pg_ivm--1.0.sql pg_ivm--1.0--1.1.sql pg_ivm--1.1--1.2.sql pg_ivm--1.2--1.3.sql
+DATA = pg_ivm--1.0.sql \
+       pg_ivm--1.0--1.1.sql pg_ivm--1.1--1.2.sql pg_ivm--1.2--1.3.sql \
+       pg_ivm--1.3--1.4.sql
 
 REGRESS = pg_ivm create_immv refresh_immv