diff --git a/package.json b/package.json
index b91020a..4de8447 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "docs": "sf-docs",
     "format": "sf-format",
     "lint": "wireit",
-    "postpack": "shx rm -f oclif.manifest.json oclif.lock",
+    "postpack": "sf-clean --ignore-signing-artifacts",
     "prepack": "sf-prepack",
     "prepare": "husky install",
     "test": "wireit",