diff --git a/package.json b/package.json
index 5d84eaf..93d7602 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "lint": "eslint \"./**/*.{ts,js}\"",
     "build-tests": "esbuild test/index.ts --target=es2020 --bundle --keep-names > test/test-bundle.js",
     "test": "npm run lint && npm run build && npm run build-tests && npm run test-tape-run",
-    "test-tape-run": "concurrently --kill-others \"npx partykit dev\" \"cat test/index.html | npx tape-run --input=html --static=test | npx tap-spec\"",
+    "test-tape-run": "concurrently --kill-signal=SIGTERM --kill-others \"npx partykit dev\" \"cat test/index.html | npx tape-run --input=html --static=test | npx tap-spec\"",
     "build-cjs": "esbuild src/*.ts --format=cjs --keep-names --tsconfig=tsconfig.build.json --outdir=./dist --out-extension:.js=.cjs --sourcemap=inline",
     "build-esm": "tsc --project tsconfig.build.json",
     "build": "mkdir -p ./dist && rm -rf ./dist/* && npm run build-cjs && npm run build-esm",