diff --git a/packages/vitest/src/node/cli/cli-config.ts b/packages/vitest/src/node/cli/cli-config.ts
index aeefab1f4d6c..ce0c7120ef84 100644
--- a/packages/vitest/src/node/cli/cli-config.ts
+++ b/packages/vitest/src/node/cli/cli-config.ts
@@ -526,6 +526,7 @@ export const cliOptionsConfig: VitestCLIOptions = {
   project: {
     description: 'The name of the project to run if you are using Vitest workspace feature. This can be repeated for multiple projects: --project=1 --project=2',
     argument: '<name>',
+    array: true,
   },
   slowTestThreshold: {
     description: 'Threshold in milliseconds for a test to be considered slow (default: 300)',
diff --git a/test/core/test/cli-test.test.ts b/test/core/test/cli-test.test.ts
index a3addf3749e2..0cf5b61b3847 100644
--- a/test/core/test/cli-test.test.ts
+++ b/test/core/test/cli-test.test.ts
@@ -321,4 +321,13 @@ test('public parseCLI works correctly', () => {
   expect(() => {
     parseCLI('node --test --coverage --browser --typecheck')
   }).toThrowError(`Expected "vitest" as the first argument, received "node"`)
+
+  expect(parseCLI('vitest --project=space_1 --project=space_2')).toEqual({
+    filter: [],
+    options: {
+      'project': ['space_1', 'space_2'],
+      '--': [],
+      'color': true,
+    },
+  })
 })