diff --git a/package-lock.json b/package-lock.json
index 82ad439..5ebd079 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "speedometer",
-  "version": "0.0.81",
+  "version": "0.0.82",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "speedometer",
-      "version": "0.0.81",
+      "version": "0.0.82",
       "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 4434a83..04642d3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "speedometer",
-  "version": "0.0.81",
+  "version": "0.0.82",
   "description": "Minimal PWA speedometer that displays GPS speed. Includes TypeScript script to render PNG icons from SVG using sharp.",
   "license": "MIT",
   "private": true,
diff --git a/tests/app.test.ts b/tests/app.test.ts
index 022141b..dc8b641 100644
--- a/tests/app.test.ts
+++ b/tests/app.test.ts
@@ -172,6 +172,9 @@ describe("Speedometer App", () => {
       // Advance time by 1s (GPS_WARMUP_MS)
       vi.advanceTimersByTime(1000);
 
+      // Update timestamp to reflect elapsed time
+      mockPosition.timestamp = Date.now();
+
       // Send it again to trigger the update
       watchSuccessCallback(mockPosition as unknown as GeolocationPosition);
     } else {
@@ -218,11 +221,13 @@ describe("Speedometer App", () => {
 
       // Reading 2 (T=0.5s) -> Ignored
       vi.advanceTimersByTime(500);
+      mockPosition.timestamp = Date.now();
       watchSuccessCallback(mockPosition as unknown as GeolocationPosition);
       expect(speedEl.textContent).toBe(PLACEHOLDER);
 
       // Reading 3 (T=1.0s) -> Accepted (>= GPS_WARMUP_MS)
       vi.advanceTimersByTime(500);
+      mockPosition.timestamp = Date.now();
       watchSuccessCallback(mockPosition as unknown as GeolocationPosition);
       // 10 m/s * 2.23694 = 22.3694 -> 22
       expect(speedEl.textContent).toBe("22");
@@ -365,6 +370,7 @@ describe("Speedometer App", () => {
 
       // Advance past warmup
       vi.advanceTimersByTime(1000);
+      validPosition.timestamp = Date.now();
 
       // Second one accepted
       watchSuccessCallback(validPosition as unknown as GeolocationPosition);