diff --git a/package.json b/package.json
index 57bf590..a69f034 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "mkdirp": "^1.0.4",
     "prettier": "^2.6.2",
     "pretty-quick": "^3.1.3",
-    "private-group-spec": "github:ssbc/private-group-spec#add-classic-unbox-vectors",
+    "private-group-spec": "^8.1.0",
     "pull-cat": "1.1.11",
     "rimraf": "^3.0.2",
     "secret-stack": "6.3.2",