diff --git a/packages/ERTP/package.json b/packages/ERTP/package.json
index b300f45dfba..5da6aa86ff2 100644
--- a/packages/ERTP/package.json
+++ b/packages/ERTP/package.json
@@ -50,7 +50,7 @@
   "devDependencies": {
     "@agoric/bundle-source": "^1.1.10-dev.0",
     "@agoric/install-ses": "^0.3.3-dev.0",
-    "@agoric/swingset-vat": "^0.10.0-dev.0",
+    "@agoric/swingset-vat": "^0.23.0",
     "ava": "^3.12.1",
     "esm": "^3.2.25",
     "nyc": "^15.1.0"