diff --git a/packages/bundle-source/package.json b/packages/bundle-source/package.json
index 502d83d7190..2476fdbeec3 100644
--- a/packages/bundle-source/package.json
+++ b/packages/bundle-source/package.json
@@ -13,7 +13,7 @@
     "lint-check-jessie": "eslint -c '.eslintrc-jessie.js' '**/*.js'"
   },
   "devDependencies": {
-    "@agoric/install-ses": "^0.3.3-dev.0",
+    "@agoric/install-ses": "^0.5.29",
     "ava": "^3.12.1",
     "nyc": "^15.1.0"
   },