diff --git a/UPGRADE.md b/UPGRADE.md
index 45b4e26383b..251c8953cdd 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,8 +1,12 @@
 # Upgrade to 2.11
 
+## Deprecated usage of wrapper-level components as implementations of driver-level interfaces
+
+The usage of the wrapper `Connection` and `Statement` classes as implementations of the `Driver\Connection` and `Driver\Statement` interfaces is deprecated.
+
 ## PDO-related classes outside of the PDO namespace are deprecated
 
-The following outside of the PDO namespace have been deprecated in favor of their counterparts in the PDO namespace:
+The following PDO-related classes outside of the PDO namespace have been deprecated in favor of their counterparts in the PDO namespace:
 
 - `PDOMySql\Driver` → `PDO\MySQL\Driver`
 - `PDOOracle\Driver` → `PDO\OCI\Driver`