diff --git a/package.json b/package.json
index 235d0efb..3865ba75 100644
--- a/package.json
+++ b/package.json
@@ -31,8 +31,7 @@
     "postversion": "npm publish",
     "prepublishOnly": "git push origin --follow-tags",
     "preprepare": "rm -rf dist",
-    "prepare": "tsc -p tsconfig.json && tsc -p tsconfig-esm.json",
-    "postprepare": "bash fixup.sh",
+    "prepare": "tsc -p tsconfig.json && tsc -p tsconfig-esm.json && bash fixup.sh",
     "pretest": "npm run prepare",
     "presnap": "npm run prepare",
     "test": "c8 tap",