diff --git a/package.json b/package.json
index 14a403d645..85ac45633f 100644
--- a/package.json
+++ b/package.json
@@ -169,7 +169,8 @@
       "decoderWorker\\.min\\.wasm": "<rootDir>/node_modules/matrix-react-sdk/__mocks__/empty.js",
       "waveWorker\\.min\\.js": "<rootDir>/node_modules/matrix-react-sdk/__mocks__/empty.js",
       "context-filter-polyfill": "<rootDir>/node_modules/matrix-react-sdk/__mocks__/empty.js",
-      "FontManager.ts": "<rootDir>/node_modules/matrix-react-sdk/__mocks__/FontManager.js"
+      "FontManager.ts": "<rootDir>/node_modules/matrix-react-sdk/__mocks__/FontManager.js",
+      "workers/(.+)\\.worker\\.ts": "<rootDir>/__mocks__/workerMock.js"
     },
     "transformIgnorePatterns": [
       "/node_modules/(?!matrix-js-sdk).+$",