diff --git a/Makefile b/Makefile
index 3613f58..332f0fd 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ OBJS = \
 PGFILEDESC = "pg_ivm - incremental view maintenance on PostgreSQL"
 
 EXTENSION = pg_ivm
-DATA = pg_ivm--1.0.sql
+DATA = pg_ivm--1.0.sql pg_ivm--1.0--1.1.sql
 
 REGRESS = pg_ivm create_immv refresh_immv
 
diff --git a/pg_ivm--1.0--1.1.sql b/pg_ivm--1.0--1.1.sql
new file mode 100644
index 0000000..7fd5ea7
--- /dev/null
+++ b/pg_ivm--1.0--1.1.sql
@@ -0,0 +1,11 @@
+-- catalog
+
+ALTER TABLE pg_catalog.pg_ivm_immv ADD COLUMN ispopulated bool NOT NULL;
+
+-- functions
+
+CREATE FUNCTION refresh_immv(text, bool)
+RETURNS bigint
+STRICT
+AS 'MODULE_PATHNAME', 'refresh_immv'
+LANGUAGE C;
diff --git a/pg_ivm--1.0.sql b/pg_ivm--1.0.sql
index f8ed430..7b9c6fd 100644
--- a/pg_ivm--1.0.sql
+++ b/pg_ivm--1.0.sql
@@ -4,7 +4,6 @@ CREATE SCHEMA __pg_ivm__;
 
 CREATE TABLE __pg_ivm__.pg_ivm_immv(
   immvrelid regclass NOT NULL,
-  ispopulated bool NOT NULL,
   viewdef text NOT NULL,
 
   CONSTRAINT pg_ivm_immv_pkey PRIMARY KEY (immvrelid)
@@ -24,12 +23,6 @@ STRICT
 AS 'MODULE_PATHNAME', 'create_immv'
 LANGUAGE C;
 
-CREATE FUNCTION refresh_immv(text, bool)
-RETURNS bigint 
-STRICT
-AS 'MODULE_PATHNAME', 'refresh_immv'
-LANGUAGE C;
-
 -- trigger functions
 
 CREATE FUNCTION "IVM_immediate_before"()
diff --git a/pg_ivm.control b/pg_ivm.control
index eb68446..e61a457 100644
--- a/pg_ivm.control
+++ b/pg_ivm.control
@@ -1,6 +1,6 @@
 # incremental view maintenance extension_
 comment = 'incremental view maintenance on PostgreSQL'
-default_version = '1.0'
+default_version = '1.1'
 module_pathname = '$libdir/pg_ivm'
 relocatable = false 
 schema = pg_catalog