diff --git a/frontend/web-test-runner.config.mjs b/frontend/web-test-runner.config.mjs
index 904bce07..99b92264 100644
--- a/frontend/web-test-runner.config.mjs
+++ b/frontend/web-test-runner.config.mjs
@@ -50,6 +50,8 @@ export default {
         // include umd/commonjs modules here:
         "node_modules/url-pattern/**/*",
         "node_modules/lodash/**/*",
+        "node_modules/color/**/*",
+        "node_modules/slugify/**/*",
       ],
     }),
     importMapsPlugin({