diff --git a/README.md b/README.md
index 582506c1d..6e4eafc89 100644
--- a/README.md
+++ b/README.md
@@ -379,7 +379,11 @@ instance using the default constructor and the properties file will be loaded.
 
 ### Popular DataSource Class Names
 
-We recommended using ``dataSourceClassName`` instead of ``jdbcUrl``, but both are acceptable.  We'll say that again, *both are acceptable*.  *Note: Spring Boot auto-configuration users, you need to use ``jdbcUrl``-based configuration.*
+We recommended using ``dataSourceClassName`` instead of ``jdbcUrl``, but both are acceptable.  We'll say that again, *both are acceptable*.
+
+⚠ *Note: Spring Boot auto-configuration users, you need to use ``jdbcUrl``-based configuration.*
+
+⚠ MysqlDataSource is known to be broken, use ``jdbcUrl`` configuration instead.
 
 Here is a list of JDBC *DataSource* classes for popular databases:
 
@@ -392,7 +396,7 @@ Here is a list of JDBC *DataSource* classes for popular databases:
 | IBM DB2          | IBM JCC      | com.ibm.db2.jcc.DB2SimpleDataSource |
 | IBM Informix     | IBM Informix | com.informix.jdbcx.IfxDataSource |
 | MS SQL Server    | Microsoft    | com.microsoft.sqlserver.jdbc.SQLServerDataSource |
-| MySQL            | Connector/J  | com.mysql.jdbc.jdbc2.optional.MysqlDataSource |
+| MySQL            | Connector/J  | ~~com.mysql.jdbc.jdbc2.optional.MysqlDataSource~~ |
 | MySQL/MariaDB    | MariaDB      | org.mariadb.jdbc.MySQLDataSource |
 | Oracle           | Oracle       | oracle.jdbc.pool.OracleDataSource |
 | OrientDB         | OrientDB     | com.orientechnologies.orient.jdbc.OrientDataSource |