# Amazon EMR 7.4.0 - Tez release notes
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## Amazon EMR 7.4.0 - Tez changes
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| Type | Description | 
| --- | --- | 
| Improvement | Remove EventCounter appender from Tez removed in Hadoop 3.4.0 via [HADOOP-17524](https://issues.apache.org/jira/browse/HADOOP-17524) | 
| Upgrade | Upgrade commons-cli to 1.5.0 | 
| Upgrade | Upgrade bouncy-castle version to 1.70.0 |