diff --git a/packages/vitest/src/integrations/css/css-modules.ts b/packages/vitest/src/integrations/css/css-modules.ts
index 6c553166d..06bbe736e 100644
--- a/packages/vitest/src/integrations/css/css-modules.ts
+++ b/packages/vitest/src/integrations/css/css-modules.ts
@@ -2,7 +2,7 @@ import type { CSSModuleScopeStrategy } from '../../node/types/config'
 import { hash } from '../../node/hash'
 
 export function generateCssFilenameHash(filepath: string): string {
-  return hash('md5', filepath, 'hex').slice(0, 6)
+  return hash('sha1', filepath, 'hex').slice(0, 6)
 }
 
 export function generateScopedClassName(
diff --git a/packages/vitest/src/node/cache/index.ts b/packages/vitest/src/node/cache/index.ts
index 5a1e4ceb9..1c8478ec3 100644
--- a/packages/vitest/src/node/cache/index.ts
+++ b/packages/vitest/src/node/cache/index.ts
@@ -29,7 +29,7 @@ export class VitestCache {
       root,
       baseDir,
       'vitest',
-      hash('md5', projectName || '', 'hex'),
+      hash('sha1', projectName || '', 'hex'),
     )
   }
 }