diff --git a/jOOQ/src/main/java/org/jooq/InsertOnDuplicateStep.java b/jOOQ/src/main/java/org/jooq/InsertOnDuplicateStep.java
index 077d8abb52..f1f735f32f 100644
--- a/jOOQ/src/main/java/org/jooq/InsertOnDuplicateStep.java
+++ b/jOOQ/src/main/java/org/jooq/InsertOnDuplicateStep.java
@@ -97,13 +97,13 @@ public interface InsertOnDuplicateStep<R extends Record> extends InsertReturning
     /**
      * Add a <code>ON CONFLICT ON CONSTRAINT</code> clause to this INSERT statement.
      */
-    @Support({ CUBRID, DERBY, FIREBIRD, HSQLDB, POSTGRES })
+    @Support({ CUBRID, DERBY, FIREBIRD, HSQLDB, MYSQL, POSTGRES })
     InsertOnConflictDoUpdateStep<R> onConflictOnConstraint(Constraint constraint);
 
     /**
      * Add a <code>ON CONFLICT ON CONSTRAINT</code> clause to this INSERT statement.
      */
-    @Support({ CUBRID, DERBY, FIREBIRD, HSQLDB, POSTGRES })
+    @Support({ CUBRID, DERBY, FIREBIRD, HSQLDB, MYSQL, POSTGRES })
     InsertOnConflictDoUpdateStep<R> onConflictOnConstraint(Name constraint);
 
     /**