CHANGELOG.md in field_test-0.5.0 vs CHANGELOG.md in field_test-0.5.1

@@ -1,4 +1,8 @@
+## 0.5.1 (2021-09-22)
+
+- Improved performance of Bayesian calculations
+
 ## 0.5.0 (2021-09-21)
 
 - Significantly improved performance of Bayesian calculations
 - Dropped support for Ruby < 2.6 and Rails < 5.2