diff --git a/server/extension/sql/05_postgis3_adapter.sql b/server/extension/sql/05_postgis3_adapter.sql
new file mode 100644
index 0000000..4facb46
--- /dev/null
+++ b/server/extension/sql/05_postgis3_adapter.sql
@@ -0,0 +1,11 @@
+-- PG12_DEPRECATED
+-- Create geomval if it doesn't exist (in postgis 3+ it only exists in postgis_raster)
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'geomval') THEN
+        CREATE TYPE geomval AS (
+            geom geometry,
+            val double precision
+        );
+    END IF;
+END$$;
\ No newline at end of file