diff --git a/.changeset/remove-dead-datadir.md b/.changeset/remove-dead-datadir.md
new file mode 100644
index 0000000000..0bc073a598
--- /dev/null
+++ b/.changeset/remove-dead-datadir.md
@@ -0,0 +1,5 @@
+---
+"@workflow/next": patch
+---
+
+Remove unused `dataDir` option from `withWorkflow()` config. The option was accepted in the type but never read.
diff --git a/packages/next/src/index.ts b/packages/next/src/index.ts
index 641aa14762..5ad432ede8 100644
--- a/packages/next/src/index.ts
+++ b/packages/next/src/index.ts
@@ -38,7 +38,6 @@ export function withWorkflow(
       lazyDiscovery?: boolean;
       local?: {
         port?: number;
-        dataDir?: string;
       };
     };
   } = {}