diff --git a/src/goMain.ts b/src/goMain.ts
index 3788344..8e6f203 100644
--- a/src/goMain.ts
+++ b/src/goMain.ts
@@ -603,6 +603,9 @@
 	}
 	const coercedNew = semver.coerce(newVersion);
 	const coercedOld = semver.coerce(oldVersion);
+	if (!coercedNew || !coercedOld) {
+		return true;
+	}
 	// Both semver.coerce(0.22.0) and semver.coerce(0.22.0-rc.1) will be 0.22.0.
 	return semver.gte(coercedNew, coercedOld) && showVersions.includes(coercedNew.toString());
 }