diff --git a/packages/coding-agent/src/eval/js/shared/rewrite-imports.ts b/packages/coding-agent/src/eval/js/shared/rewrite-imports.ts
index 0d472a7da..f4b592370 100644
--- a/packages/coding-agent/src/eval/js/shared/rewrite-imports.ts
+++ b/packages/coding-agent/src/eval/js/shared/rewrite-imports.ts
@@ -29,6 +29,7 @@ type BabelExpressionStatement = {
 	type: "ExpressionStatement";
 	start: number;
 	end: number;
+	expression?: { type?: string };
 };
 
 type BabelProgramNode = BabelImportDeclaration | BabelLexicalDecl | BabelExpressionStatement | { type: string };
@@ -186,7 +187,10 @@ function returnFinalExpression(code: string): { source: string; returned: boolea
 	const suffix = code.slice(expression.end);
 	const semicolonMatch = statement.match(/;\s*$/);
 	const trimmedStatement = semicolonMatch ? statement.slice(0, semicolonMatch.index) : statement;
-	return { source: `${prefix}__omp_display__(${trimmedStatement});${suffix}`, returned: true };
+	const needsAwait =
+		expression.expression?.type === "AwaitExpression" || expression.expression?.type === "CallExpression";
+	const displayExpression = needsAwait ? `await (${trimmedStatement})` : trimmedStatement;
+	return { source: `${prefix}__omp_display__(${displayExpression});${suffix}`, returned: true };
 }
 
 /**
diff --git a/packages/coding-agent/test/core/js-executor.test.ts b/packages/coding-agent/test/core/js-executor.test.ts
index 93d717e3f..f10aae61f 100644
--- a/packages/coding-agent/test/core/js-executor.test.ts
+++ b/packages/coding-agent/test/core/js-executor.test.ts
@@ -270,6 +270,17 @@ describe("executeJs", () => {
 		});
 	});
 
+	it("awaits promise-valued final expressions before displaying", async () => {
+		const result = await executeJs("read('config.json');", {
+			sessionId,
+			session,
+			sessionFile,
+		});
+
+		expect(result.exitCode).toBe(0);
+		expect(result.output.trim()).toBe('{\n  "name": "demo",\n  "enabled": true\n}');
+	});
+
 	it("auto-displays returned objects as structured output", async () => {
 		const result = await executeJs("return { answer: 42, nested: { ok: true } };", {
 			sessionId,