diff --git a/dev-packages/e2e-tests/cli.mjs b/dev-packages/e2e-tests/cli.mjs
index c942c18c25..9b3bdd10ed 100755
--- a/dev-packages/e2e-tests/cli.mjs
+++ b/dev-packages/e2e-tests/cli.mjs
@@ -185,6 +185,14 @@ if (actions.includes('create')) {
     env: env,
   });
 
+  // Replace the dead OSSRH snapshots repo hardcoded by older RN Gradle plugins
+  // (oss.sonatype.org is EOL and intermittently 504s, breaking dependency resolution).
+  execSync(`${patchScriptsDir}/rn.patch.gradle.plugin.repo.js --app-dir .`, {
+    stdio: 'inherit',
+    cwd: appDir,
+    env: env,
+  });
+
   // Patch the app
   execSync(`patch --verbose --strip=0 --force --ignore-whitespace --fuzz 4 < ${patchScriptsDir}/rn.patch`, {
     stdio: 'inherit',
diff --git a/dev-packages/e2e-tests/patch-scripts/rn.patch.gradle.plugin.repo.js b/dev-packages/e2e-tests/patch-scripts/rn.patch.gradle.plugin.repo.js
new file mode 100755
index 0000000000..6405d4a815
--- /dev/null
+++ b/dev-packages/e2e-tests/patch-scripts/rn.patch.gradle.plugin.repo.js
@@ -0,0 +1,58 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const path = require('path');
+const { argv } = require('process');
+
+const parseArgs = require('minimist');
+const { debug } = require('@sentry/core');
+debug.enable();
+
+const args = parseArgs(argv.slice(2));
+if (!args['app-dir']) {
+  throw new Error('Missing --app-dir');
+}
+
+// Sonatype's legacy OSSRH host (oss.sonatype.org) reached end-of-life on
+// 2025-06-30 and is now unreliable — it intermittently answers with a
+// `504 Gateway Time-out` instead of a clean `404`. The React Native Gradle
+// plugin bundled with older RN versions (e.g. 0.71) hardcodes this host as a
+// snapshots repository and injects it into every project's repository list.
+// Gradle treats a 5xx from any declared repo as fatal (unlike a 404, which it
+// skips), so a single 504 breaks resolution of ANY dependency (react-android,
+// AGP lint, ...) even though those artifacts live on Maven Central / google().
+//
+// We pin a stable RN release, so the snapshots repo is only ever used for
+// nightly (0.0.0-*) builds and serves no purpose here — remove it entirely so
+// nothing in the resolution path depends on a Sonatype snapshots host.
+const SNAPSHOT_REPO_LINE = /^[^\n]*mavenRepoFromUrl\("https:\/\/oss\.sonatype\.org\/content\/repositories\/snapshots\/"\)[^\n]*\n/m;
+
+const dependencyUtilsPath = path.join(
+  args['app-dir'],
+  'node_modules',
+  'react-native-gradle-plugin',
+  'src',
+  'main',
+  'kotlin',
+  'com',
+  'facebook',
+  'react',
+  'utils',
+  'DependencyUtils.kt'
+);
+
+debug.log('Removing dead OSSRH snapshots repo from React Native Gradle plugin', dependencyUtilsPath);
+
+if (!fs.existsSync(dependencyUtilsPath)) {
+  debug.log('DependencyUtils.kt not found, skipping patch (plugin likely already uses a live repo)');
+} else {
+  const source = fs.readFileSync(dependencyUtilsPath, 'utf8');
+
+  if (!SNAPSHOT_REPO_LINE.test(source)) {
+    debug.log('DependencyUtils.kt does not reference the dead OSSRH host, nothing to patch');
+  } else {
+    const patched = source.replace(SNAPSHOT_REPO_LINE, '');
+    fs.writeFileSync(dependencyUtilsPath, patched);
+    debug.log('Removed dead OSSRH snapshots repo successfully!');
+  }
+}