diff --git a/src/lib/generateUniqueID.ts b/src/lib/generateUniqueID.ts
index 637d0139..983ebc81 100644
--- a/src/lib/generateUniqueID.ts
+++ b/src/lib/generateUniqueID.ts
@@ -20,5 +20,5 @@
  * @return {string}
  */
 export const generateUniqueID = () => {
-  return `v4-${Date.now()}-${Math.floor(Math.random() * (9e12 - 1)) + 1e12}`;
+  return `v5-${Date.now()}-${Math.floor(Math.random() * (9e12 - 1)) + 1e12}`;
 };
diff --git a/test/e2e/onCLS-test.js b/test/e2e/onCLS-test.js
index bf74bedb..31095521 100644
--- a/test/e2e/onCLS-test.js
+++ b/test/e2e/onCLS-test.js
@@ -54,7 +54,7 @@ describe('onCLS()', async function () {
 
     const [cls] = await getBeacons();
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -75,7 +75,7 @@ describe('onCLS()', async function () {
 
     const [cls] = await getBeacons();
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -96,7 +96,7 @@ describe('onCLS()', async function () {
 
     const [cls] = await getBeacons();
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -121,7 +121,7 @@ describe('onCLS()', async function () {
 
     const [cls] = await getBeacons();
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -144,7 +144,7 @@ describe('onCLS()', async function () {
     const [cls1] = await getBeacons();
 
     assert(cls1.value > 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -177,7 +177,7 @@ describe('onCLS()', async function () {
     assert.strictEqual(cls2.rating, 'poor');
     assert.strictEqual(cls2.entries.length, 2);
     assert.match(cls2.navigationType, /navigate|reload/);
-    assert.match(cls2.id, /^v4-\d+-\d+$/);
+    assert.match(cls2.id, /^v5-\d+-\d+$/);
 
     await browser.pause(1000);
     await stubVisibilityChange('visible');
@@ -210,7 +210,7 @@ describe('onCLS()', async function () {
     assert.strictEqual(cls3.rating, 'poor');
     assert.strictEqual(cls3.entries.length, 4);
     assert.match(cls3.navigationType, /navigate|reload/);
-    assert.match(cls3.id, /^v4-\d+-\d+$/);
+    assert.match(cls3.id, /^v5-\d+-\d+$/);
 
     await browser.pause(1000);
     await stubVisibilityChange('visible');
@@ -264,7 +264,7 @@ describe('onCLS()', async function () {
     const [cls1, cls2, cls3] = await getBeacons();
 
     assert.strictEqual(cls1.value, 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -308,7 +308,7 @@ describe('onCLS()', async function () {
     const [cls1, cls2, cls3] = await getBeacons();
 
     assert.strictEqual(cls1.value, 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -357,7 +357,7 @@ describe('onCLS()', async function () {
 
     assert(cls1.value > 0);
     assert(cls1.delta > 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -395,7 +395,7 @@ describe('onCLS()', async function () {
     const [cls1, cls2, cls3] = await getBeacons();
 
     assert.strictEqual(cls1.value, 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -454,7 +454,7 @@ describe('onCLS()', async function () {
     const [cls1] = await getBeacons();
 
     assert(cls1.value > 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.delta, cls1.value);
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
@@ -471,7 +471,7 @@ describe('onCLS()', async function () {
     const [cls2] = await getBeacons();
 
     assert(cls2.value > 0);
-    assert(cls2.id.match(/^v4-\d+-\d+$/));
+    assert(cls2.id.match(/^v5-\d+-\d+$/));
     assert(cls2.id !== cls1.id);
 
     assert.strictEqual(cls2.name, 'CLS');
@@ -489,7 +489,7 @@ describe('onCLS()', async function () {
     const [cls3] = await getBeacons();
 
     assert(cls3.value > 0);
-    assert(cls3.id.match(/^v4-\d+-\d+$/));
+    assert(cls3.id.match(/^v5-\d+-\d+$/));
     assert(cls3.id !== cls2.id);
 
     assert.strictEqual(cls3.name, 'CLS');
@@ -508,7 +508,7 @@ describe('onCLS()', async function () {
     const [cls1, cls2, cls3] = await getBeacons();
 
     assert.strictEqual(cls1.value, 0);
-    assert(cls1.id.match(/^v4-\d+-\d+$/));
+    assert(cls1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls1.name, 'CLS');
     assert.strictEqual(cls1.value, cls1.delta);
     assert.strictEqual(cls1.rating, 'good');
@@ -543,7 +543,7 @@ describe('onCLS()', async function () {
     const [cls4, cls5] = await getBeacons();
 
     assert.strictEqual(cls4.value, 0);
-    assert(cls4.id.match(/^v4-\d+-\d+$/));
+    assert(cls4.id.match(/^v5-\d+-\d+$/));
     assert(cls4.id !== cls3.id);
     assert.strictEqual(cls4.name, 'CLS');
     assert.strictEqual(cls4.value, cls4.delta);
@@ -570,7 +570,7 @@ describe('onCLS()', async function () {
     await stubVisibilityChange('hidden');
 
     const [cls] = await getBeacons();
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, 0);
     assert.strictEqual(cls.delta, 0);
@@ -593,7 +593,7 @@ describe('onCLS()', async function () {
     await beaconCountIs(1);
 
     const [cls] = await getBeacons();
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, 0);
     assert.strictEqual(cls.delta, 0);
@@ -613,7 +613,7 @@ describe('onCLS()', async function () {
     await beaconCountIs(1);
 
     const [cls] = await getBeacons();
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, 0);
     assert.strictEqual(cls.delta, 0);
@@ -637,7 +637,7 @@ describe('onCLS()', async function () {
     await beaconCountIs(1);
 
     const [cls] = await getBeacons();
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, 0);
     assert.strictEqual(cls.delta, 0);
@@ -676,7 +676,7 @@ describe('onCLS()', async function () {
     const [cls] = await getBeacons();
 
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.delta, cls.value);
     assert.strictEqual(cls.rating, 'good');
@@ -697,7 +697,7 @@ describe('onCLS()', async function () {
     const [cls] = await getBeacons();
 
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -718,7 +718,7 @@ describe('onCLS()', async function () {
     const [cls] = await getBeacons();
 
     assert(cls.value > 0);
-    assert(cls.id.match(/^v4-\d+-\d+$/));
+    assert(cls.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(cls.name, 'CLS');
     assert.strictEqual(cls.value, cls.delta);
     assert.strictEqual(cls.rating, 'good');
@@ -740,7 +740,7 @@ describe('onCLS()', async function () {
 
       const [cls] = await getBeacons();
       assert(cls.value > 0);
-      assert(cls.id.match(/^v4-\d+-\d+$/));
+      assert(cls.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(cls.name, 'CLS');
       assert.strictEqual(cls.value, cls.delta);
       assert.strictEqual(cls.rating, 'good');
@@ -786,7 +786,7 @@ describe('onCLS()', async function () {
       const [cls] = await getBeacons();
 
       assert(cls.value > 0);
-      assert(cls.id.match(/^v4-\d+-\d+$/));
+      assert(cls.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(cls.name, 'CLS');
       assert.strictEqual(cls.value, cls.delta);
       assert.strictEqual(cls.rating, 'good');
@@ -826,7 +826,7 @@ describe('onCLS()', async function () {
       const [cls] = await getBeacons();
 
       assert.strictEqual(cls.value, 0);
-      assert(cls.id.match(/^v4-\d+-\d+$/));
+      assert(cls.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(cls.name, 'CLS');
       assert.strictEqual(cls.value, cls.delta);
       assert.strictEqual(cls.rating, 'good');
diff --git a/test/e2e/onFCP-test.js b/test/e2e/onFCP-test.js
index d7748136..3757400b 100644
--- a/test/e2e/onFCP-test.js
+++ b/test/e2e/onFCP-test.js
@@ -44,7 +44,7 @@ describe('onFCP()', async function () {
 
     const [fcp] = await getBeacons();
     assert(fcp.value >= 0);
-    assert(fcp.id.match(/^v4-\d+-\d+$/));
+    assert(fcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp.name, 'FCP');
     assert.strictEqual(fcp.value, fcp.delta);
     assert.strictEqual(fcp.rating, 'good');
@@ -61,7 +61,7 @@ describe('onFCP()', async function () {
 
     const [fcp] = await getBeacons();
     assert(fcp.value >= 0);
-    assert(fcp.id.match(/^v4-\d+-\d+$/));
+    assert(fcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp.name, 'FCP');
     assert.strictEqual(fcp.value, fcp.delta);
     assert.strictEqual(fcp.rating, 'good');
@@ -83,7 +83,7 @@ describe('onFCP()', async function () {
     });
 
     assert(fcp.value >= 0);
-    assert(fcp.id.match(/^v4-\d+-\d+$/));
+    assert(fcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp.name, 'FCP');
     assert.strictEqual(fcp.value, fcp.delta);
     assert.strictEqual(fcp.rating, 'good');
@@ -153,7 +153,7 @@ describe('onFCP()', async function () {
 
     const [fcp] = await getBeacons();
     assert(fcp.value >= 0);
-    assert(fcp.id.match(/^v4-\d+-\d+$/));
+    assert(fcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp.name, 'FCP');
     assert.strictEqual(fcp.value, fcp.delta);
     assert.strictEqual(fcp.rating, 'needs-improvement');
@@ -170,7 +170,7 @@ describe('onFCP()', async function () {
 
     const [fcp1] = await getBeacons();
     assert(fcp1.value >= 0);
-    assert(fcp1.id.match(/^v4-\d+-\d+$/));
+    assert(fcp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp1.name, 'FCP');
     assert.strictEqual(fcp1.value, fcp1.delta);
     assert.strictEqual(fcp1.rating, 'good');
@@ -184,7 +184,7 @@ describe('onFCP()', async function () {
 
     const [fcp2] = await getBeacons();
     assert(fcp2.value >= 0);
-    assert(fcp2.id.match(/^v4-\d+-\d+$/));
+    assert(fcp2.id.match(/^v5-\d+-\d+$/));
     assert(fcp2.id !== fcp1.id);
     assert.strictEqual(fcp2.name, 'FCP');
     assert.strictEqual(fcp2.value, fcp2.delta);
@@ -199,7 +199,7 @@ describe('onFCP()', async function () {
 
     const [fcp3] = await getBeacons();
     assert(fcp3.value >= 0);
-    assert(fcp3.id.match(/^v4-\d+-\d+$/));
+    assert(fcp3.id.match(/^v5-\d+-\d+$/));
     assert(fcp3.id !== fcp2.id);
     assert.strictEqual(fcp3.name, 'FCP');
     assert.strictEqual(fcp3.value, fcp3.delta);
@@ -227,7 +227,7 @@ describe('onFCP()', async function () {
 
     const [fcp1] = await getBeacons();
     assert(fcp1.value >= 0);
-    assert(fcp1.id.match(/^v4-\d+-\d+$/));
+    assert(fcp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp1.name, 'FCP');
     assert.strictEqual(fcp1.value, fcp1.delta);
     assert.strictEqual(fcp1.rating, 'good');
@@ -241,7 +241,7 @@ describe('onFCP()', async function () {
 
     const [fcp2] = await getBeacons();
     assert(fcp2.value >= 0);
-    assert(fcp2.id.match(/^v4-\d+-\d+$/));
+    assert(fcp2.id.match(/^v5-\d+-\d+$/));
     assert(fcp2.id !== fcp1.id);
     assert.strictEqual(fcp2.name, 'FCP');
     assert.strictEqual(fcp2.value, fcp2.delta);
@@ -259,7 +259,7 @@ describe('onFCP()', async function () {
 
     const [fcp] = await getBeacons();
     assert(fcp.value >= 0);
-    assert(fcp.id.match(/^v4-\d+-\d+$/));
+    assert(fcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(fcp.name, 'FCP');
     assert.strictEqual(fcp.value, fcp.delta);
     assert.strictEqual(fcp.rating, 'good');
@@ -287,7 +287,7 @@ describe('onFCP()', async function () {
       const [fcp] = await getBeacons();
 
       assert(fcp.value >= 0);
-      assert(fcp.id.match(/^v4-\d+-\d+$/));
+      assert(fcp.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(fcp.name, 'FCP');
       assert.strictEqual(fcp.value, fcp.delta);
       assert.strictEqual(fcp.rating, 'good');
@@ -335,7 +335,7 @@ describe('onFCP()', async function () {
 
       const [fcp] = await getBeacons();
       assert(fcp.value >= 0);
-      assert(fcp.id.match(/^v4-\d+-\d+$/));
+      assert(fcp.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(fcp.name, 'FCP');
       assert.strictEqual(fcp.value, fcp.delta);
       assert.strictEqual(fcp.rating, 'good');
@@ -378,7 +378,7 @@ describe('onFCP()', async function () {
 
       const [fcp] = await getBeacons();
       assert(fcp.value >= 0);
-      assert(fcp.id.match(/^v4-\d+-\d+$/));
+      assert(fcp.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(fcp.name, 'FCP');
       assert.strictEqual(fcp.value, fcp.delta);
       assert.strictEqual(fcp.rating, 'good');
diff --git a/test/e2e/onINP-test.js b/test/e2e/onINP-test.js
index 4db92e47..80e2175d 100644
--- a/test/e2e/onINP-test.js
+++ b/test/e2e/onINP-test.js
@@ -54,7 +54,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -77,7 +77,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -105,7 +105,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -131,7 +131,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -154,7 +154,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -179,7 +179,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -308,7 +308,7 @@ describe('onINP()', async function () {
 
     const [inp1] = await getBeacons();
     assert(inp1.value >= 0);
-    assert(inp1.id.match(/^v4-\d+-\d+$/));
+    assert(inp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp1.name, 'INP');
     assert.strictEqual(inp1.value, inp1.delta);
     assert.strictEqual(inp1.rating, 'good');
@@ -335,7 +335,7 @@ describe('onINP()', async function () {
     const [inp2] = await getBeacons();
 
     assert(inp2.value >= 0);
-    assert(inp2.id.match(/^v4-\d+-\d+$/));
+    assert(inp2.id.match(/^v5-\d+-\d+$/));
     assert(inp1.id !== inp2.id);
     assert.strictEqual(inp2.name, 'INP');
     assert.strictEqual(inp2.value, inp2.delta);
@@ -363,7 +363,7 @@ describe('onINP()', async function () {
 
     const [inp3] = await getBeacons();
     assert(inp3.value >= 0);
-    assert(inp3.id.match(/^v4-\d+-\d+$/));
+    assert(inp3.id.match(/^v5-\d+-\d+$/));
     assert(inp1.id !== inp3.id);
     assert.strictEqual(inp3.name, 'INP');
     assert.strictEqual(inp3.value, inp3.delta);
@@ -406,7 +406,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -431,7 +431,7 @@ describe('onINP()', async function () {
 
     const [inp] = await getBeacons();
     assert(inp.value >= 0);
-    assert(inp.id.match(/^v4-\d+-\d+$/));
+    assert(inp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(inp.name, 'INP');
     assert.strictEqual(inp.value, inp.delta);
     assert.strictEqual(inp.rating, 'good');
@@ -458,7 +458,7 @@ describe('onINP()', async function () {
       const [inp1] = await getBeacons();
 
       assert(inp1.value >= 100 - ROUNDING_ERROR);
-      assert(inp1.id.match(/^v4-\d+-\d+$/));
+      assert(inp1.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(inp1.name, 'INP');
       assert.strictEqual(inp1.value, inp1.delta);
       assert.strictEqual(inp1.rating, 'good');
@@ -535,7 +535,7 @@ describe('onINP()', async function () {
       const [inp2] = await getBeacons();
 
       assert(inp2.value >= 300 - ROUNDING_ERROR);
-      assert(inp2.id.match(/^v4-\d+-\d+$/));
+      assert(inp2.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(inp2.name, 'INP');
       assert.strictEqual(inp2.value, inp1.value + inp2.delta);
       assert.strictEqual(inp2.rating, 'needs-improvement');
diff --git a/test/e2e/onLCP-test.js b/test/e2e/onLCP-test.js
index b1cd7782..bfa60c53 100644
--- a/test/e2e/onLCP-test.js
+++ b/test/e2e/onLCP-test.js
@@ -125,7 +125,7 @@ describe('onLCP()', async function () {
     const [lcp1, lcp2] = await getBeacons();
 
     assert(lcp1.value > 0);
-    assert(lcp1.id.match(/^v4-\d+-\d+$/));
+    assert(lcp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp1.name, 'LCP');
     assert.strictEqual(lcp1.value, lcp1.delta);
     assert.strictEqual(lcp1.rating, 'good');
@@ -133,7 +133,7 @@ describe('onLCP()', async function () {
     assert.strictEqual(lcp1.navigationType, 'navigate');
 
     assert(lcp2.value > 500); // Greater than the image load delay.
-    assert(lcp2.id.match(/^v4-\d+-\d+$/));
+    assert(lcp2.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp2.name, 'LCP');
     assert(lcp2.value > lcp2.delta);
     assert.strictEqual(lcp2.rating, 'good');
@@ -345,7 +345,7 @@ describe('onLCP()', async function () {
     const [lcp1] = await getBeacons();
 
     assert(lcp1.value > 0);
-    assert(lcp1.id.match(/^v4-\d+-\d+$/));
+    assert(lcp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp1.name, 'LCP');
     assert.strictEqual(lcp1.value, lcp1.delta);
     assert.strictEqual(lcp1.rating, 'good');
@@ -359,7 +359,7 @@ describe('onLCP()', async function () {
     const [lcp2] = await getBeacons();
 
     assert(lcp2.value > 0);
-    assert(lcp2.id.match(/^v4-\d+-\d+$/));
+    assert(lcp2.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp2.name, 'LCP');
     assert.strictEqual(lcp2.value, lcp2.delta);
     assert.strictEqual(lcp2.rating, 'good');
@@ -390,7 +390,7 @@ describe('onLCP()', async function () {
     const [lcp1] = await getBeacons();
 
     assert(lcp1.value > 0);
-    assert(lcp1.id.match(/^v4-\d+-\d+$/));
+    assert(lcp1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp1.name, 'LCP');
     assert.strictEqual(lcp1.value, lcp1.delta);
     assert.strictEqual(lcp1.rating, 'good');
@@ -404,7 +404,7 @@ describe('onLCP()', async function () {
     const [lcp2] = await getBeacons();
 
     assert(lcp2.value > 0);
-    assert(lcp2.id.match(/^v4-\d+-\d+$/));
+    assert(lcp2.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp2.name, 'LCP');
     assert.strictEqual(lcp2.value, lcp2.delta);
     assert.strictEqual(lcp2.rating, 'good');
@@ -428,7 +428,7 @@ describe('onLCP()', async function () {
     const [lcp] = await getBeacons();
 
     assert(lcp.value > 0);
-    assert(lcp.id.match(/^v4-\d+-\d+$/));
+    assert(lcp.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(lcp.name, 'LCP');
     assert.strictEqual(lcp.value, lcp.delta);
     assert.strictEqual(lcp.rating, 'good');
@@ -667,7 +667,7 @@ describe('onLCP()', async function () {
       const [lcp2] = await getBeacons();
 
       assert(lcp2.value > 0);
-      assert(lcp2.id.match(/^v4-\d+-\d+$/));
+      assert(lcp2.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(lcp2.name, 'LCP');
       assert.strictEqual(lcp2.value, lcp2.delta);
       assert.strictEqual(lcp2.entries.length, 0);
@@ -689,7 +689,7 @@ const assertStandardReportsAreCorrect = (beacons) => {
   const [lcp] = beacons;
 
   assert(lcp.value > 500); // Greater than the image load delay.
-  assert(lcp.id.match(/^v4-\d+-\d+$/));
+  assert(lcp.id.match(/^v5-\d+-\d+$/));
   assert.strictEqual(lcp.name, 'LCP');
   assert.strictEqual(lcp.value, lcp.delta);
   assert.strictEqual(lcp.rating, 'good');
@@ -701,7 +701,7 @@ const assertFullReportsAreCorrect = (beacons) => {
   const [lcp1, lcp2] = beacons;
 
   assert(lcp1.value < 500); // Less than the image load delay.
-  assert(lcp1.id.match(/^v4-\d+-\d+$/));
+  assert(lcp1.id.match(/^v5-\d+-\d+$/));
   assert.strictEqual(lcp1.name, 'LCP');
   assert.strictEqual(lcp1.value, lcp1.delta);
   assert.strictEqual(lcp1.rating, 'good');
diff --git a/test/e2e/onTTFB-test.js b/test/e2e/onTTFB-test.js
index 01833a78..25453043 100644
--- a/test/e2e/onTTFB-test.js
+++ b/test/e2e/onTTFB-test.js
@@ -75,7 +75,7 @@ describe('onTTFB()', async function () {
     assert(ttfb.value >= 0);
     assert(ttfb.value >= ttfb.entries[0].requestStart);
     assert(ttfb.value <= ttfb.entries[0].loadEventEnd);
-    assert(ttfb.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb.name, 'TTFB');
     assert.strictEqual(ttfb.value, ttfb.delta);
     assert.strictEqual(ttfb.rating, 'good');
@@ -93,7 +93,7 @@ describe('onTTFB()', async function () {
     assert(ttfb.value >= 0);
     assert(ttfb.value >= ttfb.entries[0].requestStart);
     assert(ttfb.value <= ttfb.entries[0].loadEventEnd);
-    assert(ttfb.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb.name, 'TTFB');
     assert.strictEqual(ttfb.value, ttfb.delta);
     assert.strictEqual(ttfb.rating, 'good');
@@ -111,7 +111,7 @@ describe('onTTFB()', async function () {
     assert(ttfb.value >= 1000);
     assert(ttfb.value >= ttfb.entries[0].requestStart);
     assert(ttfb.value <= ttfb.entries[0].loadEventEnd);
-    assert(ttfb.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb.name, 'TTFB');
     assert.strictEqual(ttfb.value, ttfb.delta);
     assert.strictEqual(ttfb.rating, 'needs-improvement');
@@ -176,7 +176,7 @@ describe('onTTFB()', async function () {
     assert(ttfb1.value >= 0);
     assert(ttfb1.value >= ttfb1.entries[0].requestStart);
     assert(ttfb1.value <= ttfb1.entries[0].loadEventEnd);
-    assert(ttfb1.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb1.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb1.name, 'TTFB');
     assert.strictEqual(ttfb1.rating, 'good');
     assert.strictEqual(ttfb1.value, ttfb1.delta);
@@ -190,7 +190,7 @@ describe('onTTFB()', async function () {
 
     const ttfb2 = await getTTFBBeacon();
 
-    assert(ttfb2.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb2.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb2.value, 0);
     assert.strictEqual(ttfb2.name, 'TTFB');
     assert.strictEqual(ttfb2.value, ttfb2.delta);
@@ -231,7 +231,7 @@ describe('onTTFB()', async function () {
     assert(ttfb.value >= 0);
     assert(ttfb.value >= ttfb.entries[0].requestStart);
     assert(ttfb.value <= ttfb.entries[0].loadEventEnd);
-    assert(ttfb.id.match(/^v4-\d+-\d+$/));
+    assert(ttfb.id.match(/^v5-\d+-\d+$/));
     assert.strictEqual(ttfb.name, 'TTFB');
     assert.strictEqual(ttfb.value, ttfb.delta);
     assert.strictEqual(ttfb.rating, 'good');
@@ -250,7 +250,7 @@ describe('onTTFB()', async function () {
       assert(ttfb.value >= 0);
       assert(ttfb.value >= ttfb.entries[0].requestStart);
       assert(ttfb.value <= ttfb.entries[0].loadEventEnd);
-      assert(ttfb.id.match(/^v4-\d+-\d+$/));
+      assert(ttfb.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(ttfb.name, 'TTFB');
       assert.strictEqual(ttfb.value, ttfb.delta);
       assert.strictEqual(ttfb.rating, 'good');
@@ -354,7 +354,7 @@ describe('onTTFB()', async function () {
       const ttfb = await getTTFBBeacon();
 
       assert(ttfb.value >= 0);
-      assert(ttfb.id.match(/^v4-\d+-\d+$/));
+      assert(ttfb.id.match(/^v5-\d+-\d+$/));
       assert.strictEqual(ttfb.name, 'TTFB');
       assert.strictEqual(ttfb.value, ttfb.delta);
       assert.strictEqual(ttfb.rating, 'good');