diff --git a/.changeset/stupid-pumpkins-crash.md b/.changeset/stupid-pumpkins-crash.md
new file mode 100644
index 000000000..f65bc56ae
--- /dev/null
+++ b/.changeset/stupid-pumpkins-crash.md
@@ -0,0 +1,5 @@
+---
+'@vercel/remix-builder': patch
+---
+
+Only add workspace check flag for Yarn v1
diff --git a/packages/remix/src/utils.ts b/packages/remix/src/utils.ts
index f8ac5db13..c13978be7 100644
--- a/packages/remix/src/utils.ts
+++ b/packages/remix/src/utils.ts
@@ -1,4 +1,5 @@
 import semver from 'semver';
+import { execSync } from 'child_process';
 import { existsSync, promises as fs } from 'fs';
 import { basename, dirname, join, relative, resolve, sep } from 'path';
 import { pathToRegexp, Key } from 'path-to-regexp';
@@ -283,10 +284,16 @@ export function addDependencies(
     }
   } else {
     // 'yarn'
-    args.push('add', '--ignore-workspace-root-check');
+    args.push('add');
     if (opts.saveDev) {
       args.push('--dev');
     }
+    const yarnVersion = execSync('yarn -v', { encoding: 'utf8' }).trim();
+    const isYarnV1 = semver.satisfies(yarnVersion, '1');
+    if (isYarnV1) {
+      // Ignoring workspace check is only needed on Yarn v1
+      args.push('--ignore-workspace-root-check');
+    }
   }
 
   // Don't fail if pnpm is being run at the workspace root