diff --git a/js/src/client.ts b/js/src/client.ts
index 7afeca094..bd7590bda 100644
--- a/js/src/client.ts
+++ b/js/src/client.ts
@@ -59,7 +59,7 @@ import {
   RunEvaluator,
 } from "./evaluation/evaluator.js";
 import { __version__ } from "./index.js";
-import { assertUuid } from "./utils/uuid.js";
+import { assertUuid } from "./utils/_uuid.js";
 import { warnOnce } from "./utils/warn.js";
 import { parsePromptIdentifier } from "./utils/prompts.js";
 import { raiseForStatus } from "./utils/error.js";
diff --git a/js/src/evaluation/_runner.ts b/js/src/evaluation/_runner.ts
index e9bed2e4a..6c74afa34 100644
--- a/js/src/evaluation/_runner.ts
+++ b/js/src/evaluation/_runner.ts
@@ -9,7 +9,7 @@ import {
 } from "../schemas.js";
 import { traceable } from "../traceable.js";
 import { getDefaultRevisionId, getGitInfo } from "../utils/_git.js";
-import { assertUuid } from "../utils/uuid.js";
+import { assertUuid } from "../utils/_uuid.js";
 import { AsyncCaller } from "../utils/async_caller.js";
 import { atee } from "../utils/atee.js";
 import { getLangChainEnvVarsMetadata } from "../utils/env.js";