diff --git a/resources/planwise/plpgsql/isochrones.sql b/resources/planwise/plpgsql/isochrones.sql
index 79d530505..0c68616dc 100644
--- a/resources/planwise/plpgsql/isochrones.sql
+++ b/resources/planwise/plpgsql/isochrones.sql
@@ -1,3 +1,6 @@
+CREATE EXTENSION IF NOT EXISTS postgis;
+CREATE EXTENSION IF NOT EXISTS pgrouting;
+
 -- find closest node to a point
 CREATE OR REPLACE FUNCTION closest_node (original geometry(point, 4326))
 returns integer as $$
diff --git a/resources/planwise/plpgsql/patches.sql b/resources/planwise/plpgsql/patches.sql
index da46f639f..d77a5d4f2 100644
--- a/resources/planwise/plpgsql/patches.sql
+++ b/resources/planwise/plpgsql/patches.sql
@@ -1,3 +1,6 @@
+CREATE EXTENSION IF NOT EXISTS postgis;
+CREATE EXTENSION IF NOT EXISTS pgrouting;
+
 -- Copied from pgRouting and modified
 -- Original file: src/alpha_shape/sql/alpha_shape.sql
 -- Original copyright notice follows