diff --git a/apps/website/build.js b/apps/website/build.js
index f13a831..0d91d10 100644
--- a/apps/website/build.js
+++ b/apps/website/build.js
@@ -1,7 +1,18 @@
 const { spawnSync } = require('child_process');
 
 function runCommand(command, args) {
-  const result = spawnSync(command, args, { stdio: 'inherit', shell: true });
+  const result = spawnSync(command, args, {
+    stdio: 'inherit',
+    shell: true,
+    env: {
+      ...process.env,
+      // Suppress the "Browserslist: caniuse-lite is outdated" warning. Although the warning is
+      // potentially useful, the check is performed in a way that is nondeterministic and can cause
+      // Rush pipelines to fail. Moreover, the outdated version is often irrelevant and/or nontrivial
+      // to upgrade. See this thread for details: https://github.com/microsoft/rushstack/issues/2981
+      BROWSERSLIST_IGNORE_OLD_DATA: '1'
+    }
+  });
   if (result.error) {
     console.log(result.error.message);
     process.exitCode = 1;