RELEASE_NOTES.md in harvesting-0.5.1 vs RELEASE_NOTES.md in harvesting-0.6.0

@@ -4,9 +4,17 @@
 
 **Notes**
 
 **Bug Fixes**
 
+### Version 0.6.0 - July 17, 2023
+
+**Notes**
+
+**Bug Fixes**
+
+- Fix incompatibility with Ruby 3.0 and kwargs: https://github.com/fastruby/harvesting/pull/68
+
 ### Version 0.5.1 - January 14, 2021
 
 **Notes**
 - Add support for Codecov so that we can track code coverage over time in the
 library: https://github.com/fastruby/harvesting/pull/59