diff --git a/packages/google-cloud-billing/CHANGELOG.md b/packages/google-cloud-billing/CHANGELOG.md
index bc5d4d08c174..90b6f0cfb22d 100644
--- a/packages/google-cloud-billing/CHANGELOG.md
+++ b/packages/google-cloud-billing/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## [1.6.0](https://github.com/googleapis/python-billing/compare/v1.5.1...v1.6.0) (2022-05-05)
+
+
+### Features
+
+* AuditConfig for IAM v1 ([6ce587c](https://github.com/googleapis/python-billing/commit/6ce587c58fb76d0f2f2ff5c9bcfc25a8f307071d))
+
+
+### Bug Fixes
+
+* **deps:** require grpc-google-iam-v1 >=0.12.4 ([6ce587c](https://github.com/googleapis/python-billing/commit/6ce587c58fb76d0f2f2ff5c9bcfc25a8f307071d))
+
+
+### Documentation
+
+* fix type in docstring for map fields ([6ce587c](https://github.com/googleapis/python-billing/commit/6ce587c58fb76d0f2f2ff5c9bcfc25a8f307071d))
+
 ### [1.5.1](https://github.com/googleapis/python-billing/compare/v1.5.0...v1.5.1) (2022-03-05)
 
 
diff --git a/packages/google-cloud-billing/setup.py b/packages/google-cloud-billing/setup.py
index f4024c19a102..e50f957db1c1 100644
--- a/packages/google-cloud-billing/setup.py
+++ b/packages/google-cloud-billing/setup.py
@@ -20,7 +20,7 @@
 
 import setuptools  # type: ignore
 
-version = "1.5.1"
+version = "1.6.0"
 
 package_root = os.path.abspath(os.path.dirname(__file__))