diff --git a/package.json b/package.json
index 56f78ff..73476cc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hatchet-dev/typescript-sdk",
-  "version": "0.20.0",
+  "version": "0.20.1",
   "description": "Background task orchestration & visibility for developers",
   "types": "dist/index.d.ts",
   "files": [
diff --git a/src/clients/worker/worker.ts b/src/clients/worker/worker.ts
index 374b8c8..fb1fbb1 100644
--- a/src/clients/worker/worker.ts
+++ b/src/clients/worker/worker.ts
@@ -134,7 +134,7 @@ export class Worker {
   async registerWorkflow(initWorkflow: Workflow) {
     const workflow: Workflow = {
       ...initWorkflow,
-      id: this.client.config.namespace + initWorkflow.id,
+      id: (this.client.config.namespace + initWorkflow.id).toLowerCase(),
     };
     try {
       if (workflow.concurrency?.key && workflow.concurrency.expression) {