diff --git a/package-lock.json b/package-lock.json
index a6558d506e7..fc09ee45466 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@agoric/cosmic-swingset",
-  "version": "0.8.4-dev.0",
+  "version": "0.8.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 30446bba26e..b1357a5e009 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agoric/cosmic-swingset",
-  "version": "0.8.4-dev.0",
+  "version": "0.8.4",
   "description": "Agoric's Cosmos blockchain integration",
   "main": "index.js",
   "repository": "https://github.com/Agoric/cosmic-swingset",