diff --git a/packages/api/src/__tests__/assistant-tools-insights-summary.test.ts b/packages/api/src/__tests__/assistant-tools-insights-summary.test.ts
index db30331..3ebfda4 100644
--- a/packages/api/src/__tests__/assistant-tools-insights-summary.test.ts
+++ b/packages/api/src/__tests__/assistant-tools-insights-summary.test.ts
@@ -43,26 +43,30 @@ describe("assistant insights summary tools", () => {
   });
 
   it("routes insights summary reads through the insights router path", async () => {
+    const now = new Date();
+    const daysAgo = (n: number) => new Date(now.getTime() - n * 24 * 60 * 60 * 1000);
+    const daysFromNow = (n: number) => new Date(now.getTime() + n * 24 * 60 * 60 * 1000);
+
     const db = {
       project: {
         findMany: vi.fn().mockResolvedValue([
           {
             budgetCents: 100_000,
-            startDate: new Date("2026-03-01T00:00:00.000Z"),
-            endDate: new Date("2026-03-31T00:00:00.000Z"),
+            startDate: daysAgo(30),
+            endDate: daysFromNow(30),
             demandRequirements: [
               {
                 headcount: 3,
-                startDate: new Date("2026-03-20T00:00:00.000Z"),
-                endDate: new Date("2026-04-05T00:00:00.000Z"),
+                startDate: daysAgo(5),
+                endDate: daysFromNow(10),
                 _count: { assignments: 1 },
               },
             ],
             assignments: [
               {
                 resourceId: "res_1",
-                startDate: new Date("2026-03-01T00:00:00.000Z"),
-                endDate: new Date("2026-03-31T00:00:00.000Z"),
+                startDate: daysAgo(30),
+                endDate: daysFromNow(30),
                 hoursPerDay: 8,
                 dailyCostCents: 10_000,
                 status: "ACTIVE",