diff --git a/app/package.json b/app/package.json
index 62ef99c50..d9947cabc 100644
--- a/app/package.json
+++ b/app/package.json
@@ -7,9 +7,10 @@
     "build:prod": "webpack --mode=production",
     "build:test": "tsc --build tsconfig.test.json",
     "clean": "rimraf build",
+    "clean:artifacts": "rimraf artifacts",
     "prepublishOnly": "yarn run build",
-    "test": "jest",
-    "test:pwdebug": "PWDEBUG=1 jest",
+    "test": "jlpm run clean:artifacts && jest",
+    "test:pwdebug": "jlpm run clean:artifacts && PWDEBUG=1 jlpm run test",
     "test:cov": "jest --collect-coverage",
     "test:debug": "node --inspect-brk node_modules/.bin/jest --runInBand",
     "test:debug:watch": "node --inspect-brk node_modules/.bin/jest --runInBand --watch",