CHANGELOG.md in logstash-codec-netflow-4.2.0 vs CHANGELOG.md in logstash-codec-netflow-4.2.1

- old
+ new

@@ -1,4 +1,8 @@
+## 4.2.1
+
+  - Fix sub-second timestamp math
+
 ## 4.2.0
 
   - Added Cisco ACI to list of known working Netflow v9 exporters
   - Added support for IXIA Packet Broker IPFIX
   - Fixed issue with Procera float fields