Update README.md
diff --git a/README.md b/README.md
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@@ -79,7 +79,7 @@
- **Weekends and holidays**. If a deadline is due to expire on a weekend or
US public holiday, the deadline will be moved to the next normal work day.
- **Grace period**. We have a 14-day grace period. If a 90-day deadline
- expires but the upstream engineers lets us know before the deadline that a
+ expires but the upstream engineers let us know before the deadline that a
patch is scheduled for release on a specific day within 14 days following
the deadline, the public disclosure will be delayed until the availability
of the patch.