diff --git a/dev-packages/browser-integration-tests/package.json b/dev-packages/browser-integration-tests/package.json
index 2803a03c8eec..0c28fbfabce5 100644
--- a/dev-packages/browser-integration-tests/package.json
+++ b/dev-packages/browser-integration-tests/package.json
@@ -62,7 +62,7 @@
     "@sentry-internal/rrweb": "2.34.0",
     "@sentry/browser": "10.48.0",
     "@supabase/supabase-js": "2.49.3",
-    "axios": "1.13.5",
+    "axios": "1.15.0",
     "babel-loader": "^10.1.1",
     "fflate": "0.8.2",
     "html-webpack-plugin": "^5.5.0",
diff --git a/dev-packages/browser-integration-tests/suites/sessions/route-lifecycle/test.ts b/dev-packages/browser-integration-tests/suites/sessions/route-lifecycle/test.ts
index 1ccee9cd2728..05f10146f3f5 100644
--- a/dev-packages/browser-integration-tests/suites/sessions/route-lifecycle/test.ts
+++ b/dev-packages/browser-integration-tests/suites/sessions/route-lifecycle/test.ts
@@ -1,27 +1,30 @@
 import { expect } from '@playwright/test';
-import type { SerializedSession } from '@sentry/core/src';
 import { sentryTest } from '../../../utils/fixtures';
-import { getMultipleSentryEnvelopeRequests } from '../../../utils/helpers';
+import { waitForSession } from '../../../utils/helpers';
 
 sentryTest(
   'should start new sessions on pushState navigation with route lifecycle (default).',
   async ({ getLocalTestUrl, page }) => {
     const url = await getLocalTestUrl({ testDir: __dirname });
 
-    const sessionsPromise = getMultipleSentryEnvelopeRequests<SerializedSession>(page, 10, {
-      url,
-      envelopeType: 'session',
-      timeout: 4000,
-    });
+    const initSessionPromise = waitForSession(page, s => !!s.init && s.status === 'ok');
+    await page.goto(url);
+    const initSession = await initSessionPromise;
 
-    await page.waitForSelector('#navigate');
-
-    await page.locator('#navigate').click();
+    const session1Promise = waitForSession(page, s => !!s.init && s.status === 'ok' && s.sid !== initSession.sid);
     await page.locator('#navigate').click();
+    const session1 = await session1Promise;
+
+    const session2Promise = waitForSession(page, s => !!s.init && s.status === 'ok' && s.sid !== session1.sid);
     await page.locator('#navigate').click();
+    const session2 = await session2Promise;
 
-    const startedSessions = (await sessionsPromise).filter(session => session.init);
+    const session3Promise = waitForSession(page, s => !!s.init && s.status === 'ok' && s.sid !== session2.sid);
+    await page.locator('#navigate').click();
+    const session3 = await session3Promise;
 
-    expect(startedSessions.length).toBe(4);
+    // Verify we got 4 distinct init sessions (1 initial + 3 navigations)
+    const sids = new Set([initSession.sid, session1.sid, session2.sid, session3.sid]);
+    expect(sids.size).toBe(4);
   },
 );
diff --git a/dev-packages/e2e-tests/test-applications/nestjs-basic/package.json b/dev-packages/e2e-tests/test-applications/nestjs-basic/package.json
index 46beea570042..6917e546a383 100644
--- a/dev-packages/e2e-tests/test-applications/nestjs-basic/package.json
+++ b/dev-packages/e2e-tests/test-applications/nestjs-basic/package.json
@@ -21,7 +21,7 @@
     "@nestjs/platform-express": "^10.0.0",
     "@sentry/nestjs": "latest || *",
     "reflect-metadata": "^0.2.0",
-    "axios": "1.13.5",
+    "axios": "1.15.0",
     "rxjs": "^7.8.1"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 17e2c001080d..349d5ebfae0a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11846,14 +11846,14 @@ aws-ssl-profiles@^1.1.2:
   resolved "https://registry.yarnpkg.com/aws-ssl-profiles/-/aws-ssl-profiles-1.1.2.tgz#157dd77e9f19b1d123678e93f120e6f193022641"
   integrity sha512-NZKeq9AfyQvEeNlN0zSYAaWrmBffJh3IELMZfRpJVWgrpEbtEpnjvzqBPf+mxoI287JohRDoa+/nsfqqiZmF6g==
 
-axios@1.13.5, axios@^1.12.0:
-  version "1.13.5"
-  resolved "https://registry.yarnpkg.com/axios/-/axios-1.13.5.tgz#5e464688fa127e11a660a2c49441c009f6567a43"
-  integrity sha512-cz4ur7Vb0xS4/KUN0tPWe44eqxrIu31me+fbang3ijiNscE129POzipJJA6zniq2C/Z6sJCjMimjS8Lc/GAs8Q==
+axios@1.15.0, axios@^1.12.0:
+  version "1.15.0"
+  resolved "https://registry.yarnpkg.com/axios/-/axios-1.15.0.tgz#0fcee91ef03d386514474904b27863b2c683bf4f"
+  integrity sha512-wWyJDlAatxk30ZJer+GeCWS209sA42X+N5jU2jy6oHTp7ufw8uzUTVFBX9+wTfAlhiJXGS0Bq7X6efruWjuK9Q==
   dependencies:
     follow-redirects "^1.15.11"
     form-data "^4.0.5"
-    proxy-from-env "^1.1.0"
+    proxy-from-env "^2.1.0"
 
 axobject-query@^3.2.1:
   version "3.2.1"
@@ -25657,6 +25657,11 @@ proxy-from-env@^1.1.0:
   resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-1.1.0.tgz#e102f16ca355424865755d2c9e8ea4f24d58c3e2"
   integrity sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==
 
+proxy-from-env@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-2.1.0.tgz#a7487568adad577cfaaa7e88c49cab3ab3081aba"
+  integrity sha512-cJ+oHTW1VAEa8cJslgmUZrc+sjRKgAKl3Zyse6+PV38hZe/V6Z14TbCuXcan9F9ghlz4QrFr2c92TNF82UkYHA==
+
 proxy@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/proxy/-/proxy-2.1.1.tgz#45f9b307508ffcae12bdc71678d44a4ab79cbf8b"
@@ -28557,7 +28562,6 @@ stylus@0.59.0, stylus@^0.59.0:
 
 sucrase@^3.27.0, sucrase@^3.35.0, sucrase@getsentry/sucrase#es2020-polyfills:
   version "3.36.0"
-  uid fd682f6129e507c00bb4e6319cc5d6b767e36061
   resolved "https://codeload.github.com/getsentry/sucrase/tar.gz/fd682f6129e507c00bb4e6319cc5d6b767e36061"
   dependencies:
     "@jridgewell/gen-mapping" "^0.3.2"