diff --git a/.changeset/strong-colts-hang.md b/.changeset/strong-colts-hang.md
new file mode 100644
index 000000000..90b822b41
--- /dev/null
+++ b/.changeset/strong-colts-hang.md
@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Fix "Cannot read properties of null" error in CLI code
diff --git a/packages/astro/src/cli/telemetry/index.ts b/packages/astro/src/cli/telemetry/index.ts
index dffb18bd9..fd664fcc9 100644
--- a/packages/astro/src/cli/telemetry/index.ts
+++ b/packages/astro/src/cli/telemetry/index.ts
@@ -9,7 +9,7 @@ interface TelemetryOptions {
 }
 
 export async function notify() {
-	const packageManager = (await whichPm(process.cwd())).name ?? 'npm';
+	const packageManager = (await whichPm(process.cwd()))?.name ?? 'npm';
 	await telemetry.notify(() => {
 		console.log(msg.telemetryNotice(packageManager) + '\n');
 		return true;