diff --git a/packages/client/package.json b/packages/client/package.json
index dc5eeaee9e..b680d28192 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -51,7 +51,7 @@
     "test:browser": "karma start karma.conf.js",
     "test:cli": "npm run tape -- 'test/cli/*.spec.ts'",
     "test:integration": "npm run tape -- 'test/integration/**/*.spec.ts'",
-    "test:unit": "npm run tape -- 'test/!(integration|cli)/**/*.spec.ts' 'test/*.spec.ts'",
+    "test:unit": "npm run tape -- 'test/!(integration|cli|sim)/**/*.spec.ts' 'test/*.spec.ts'",
     "tsc": "../../config/cli/ts-compile.sh"
   },
   "dependencies": {