diff --git a/package.json b/package.json
index 789d7361a..2cdf69853 100644
--- a/package.json
+++ b/package.json
@@ -76,6 +76,9 @@
     "transformIgnorePatterns": [
       "node_modules/(?!(roughjs|points-on-curve|path-data-parser|points-on-path|browser-fs-access)/)"
     ],
+    "moduleNameMapper": {
+      "^worker-loader!.+": "<rootDir>/src/__mocks__/worker-mock.js"
+    },
     "resetMocks": false
   },
   "name": "excalidraw",
diff --git a/src/__mocks__/worker-mock.js b/src/__mocks__/worker-mock.js
new file mode 100644
index 000000000..428f1f8e3
--- /dev/null
+++ b/src/__mocks__/worker-mock.js
@@ -0,0 +1,4 @@
+module.exports = class {
+  postMessage() {}
+  terminate() {}
+};