diff --git a/js/package.json b/js/package.json
index 565c83b71..12f97c49a 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "langsmith",
-  "version": "0.1.47",
+  "version": "0.1.48",
   "description": "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform.",
   "packageManager": "yarn@1.22.19",
   "files": [
diff --git a/js/src/evaluation/_runner.ts b/js/src/evaluation/_runner.ts
index bbdd0ead9..a73cc392d 100644
--- a/js/src/evaluation/_runner.ts
+++ b/js/src/evaluation/_runner.ts
@@ -673,11 +673,12 @@ export class _ExperimentManager {
             this.client._selectEvalResults(summaryEvalResult);
           aggregateFeedback.push(...flattenedResults);
           for (const result of flattenedResults) {
-            const { targetRunId, ...feedback } = result;
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            const { targetRunId, key, ...feedback } = result;
             const evaluatorInfo = feedback.evaluatorInfo;
             delete feedback.evaluatorInfo;
 
-            await this.client.createFeedback(null, "key", {
+            await this.client.createFeedback(null, key, {
               ...feedback,
               projectId: projectId,
               sourceInfo: evaluatorInfo,
diff --git a/js/src/index.ts b/js/src/index.ts
index 011bb450e..2c28b5915 100644
--- a/js/src/index.ts
+++ b/js/src/index.ts
@@ -12,4 +12,4 @@ export type {
 export { RunTree, type RunTreeConfig } from "./run_trees.js";
 
 // Update using yarn bump-version
-export const __version__ = "0.1.47";
+export const __version__ = "0.1.48";
diff --git a/js/src/tests/evaluate.int.test.ts b/js/src/tests/evaluate.int.test.ts
index 98ab6c6c8..4d68b920c 100644
--- a/js/src/tests/evaluate.int.test.ts
+++ b/js/src/tests/evaluate.int.test.ts
@@ -266,7 +266,7 @@ test("evaluate can evaluate with summary evaluators", async () => {
     const runIds = runs.map(({ id }) => id).join(", ");
     const exampleIds = examples?.map(({ id }) => id).join(", ");
     return Promise.resolve({
-      key: "key",
+      key: "MyCustomScore",
       score: 1,
       comment: `Runs: ${runIds} Examples: ${exampleIds}`,
     });
@@ -279,7 +279,7 @@ test("evaluate can evaluate with summary evaluators", async () => {
   });
 
   expect(evalRes.summaryResults.results).toHaveLength(1);
-  expect(evalRes.summaryResults.results[0].key).toBe("key");
+  expect(evalRes.summaryResults.results[0].key).toBe("MyCustomScore");
   expect(evalRes.summaryResults.results[0].score).toBe(1);
   const allRuns = evalRes.results.map(({ run }) => run);
   const allExamples = evalRes.results.map(({ example }) => example);