diff --git a/carto-package.json b/carto-package.json
new file mode 100644
index 0000000..6eb2516
--- /dev/null
+++ b/carto-package.json
@@ -0,0 +1,9 @@
+{
+  "name": "observatory-server-extension",
+  "current_version": {
+    "requires": {
+      "postgresql": "^10.0.0",
+      "postgis": "^2.4"
+    }
+  }
+}