diff --git a/src/update/tasks/diffs.ts b/src/update/tasks/diffs.ts
index 39a6cbbea83..f939dc7dde5 100644
--- a/src/update/tasks/diffs.ts
+++ b/src/update/tasks/diffs.ts
@@ -13,7 +13,7 @@ function parseSource(text: string) {
 
 async function diffCode() {
 	if (!prevFiles.has("source.jsonl")) {
-		throw new Error("Missing prevFile: source.jsonl");
+		return;
 	}
 
 	const oldCode = parseSource(new TextDecoder().decode(prevFiles.get("source.jsonl")));