diff --git a/packages/angular/build/src/builders/unit-test/runners/vitest/plugins.ts b/packages/angular/build/src/builders/unit-test/runners/vitest/plugins.ts
index 5255ef519fec..fada9089d84f 100644
--- a/packages/angular/build/src/builders/unit-test/runners/vitest/plugins.ts
+++ b/packages/angular/build/src/builders/unit-test/runners/vitest/plugins.ts
@@ -124,6 +124,10 @@ export async function createVitestConfigPlugin(
           noDiscovery: true,
           include: options.optimizeDepsInclude,
         },
+        resolve: {
+          mainFields: ['es2020', 'module', 'main'],
+          conditions: ['es2015', 'es2020', 'module'],
+        },
       };
 
       const { optimizeDeps, resolve } = config;