diff --git a/CHANGELOG.md b/CHANGELOG.md
index c256ae5..bedb84f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,18 @@
 # Changelog
 
-### [1.56.2](https://github.com/googleapis/python-api-common-protos/compare/v1.56.1...v1.56.2) (2022-05-26)
+## [1.56.3](https://github.com/googleapis/python-api-common-protos/compare/v1.56.2...v1.56.3) (2022-06-21)
+
+
+### Bug Fixes
+
+* **deps:** allow protobuf < 5.0.0 ([#112](https://github.com/googleapis/python-api-common-protos/issues/112)) ([67b0231](https://github.com/googleapis/python-api-common-protos/commit/67b02313bf47d86ac84917756ff026e331665637))
+
+
+### Documentation
+
+* fix changelog header to consistent size ([#108](https://github.com/googleapis/python-api-common-protos/issues/108)) ([d315b9f](https://github.com/googleapis/python-api-common-protos/commit/d315b9f23f5dbbce27c965a2b692a8d1dcf03d60))
+
+## [1.56.2](https://github.com/googleapis/python-api-common-protos/compare/v1.56.1...v1.56.2) (2022-05-26)
 
 
 ### Bug Fixes
@@ -8,7 +20,7 @@
 * **deps:** require grpcio >= 1.0.0, <2.0.0dev ([4a402ce](https://github.com/googleapis/python-api-common-protos/commit/4a402ce798c8364679e69eefdaadcf61fc289308))
 * **deps:** require protobuf>= 3.15.0, <4.0.0dev ([#105](https://github.com/googleapis/python-api-common-protos/issues/105)) ([4a402ce](https://github.com/googleapis/python-api-common-protos/commit/4a402ce798c8364679e69eefdaadcf61fc289308))
 
-### [1.56.1](https://github.com/googleapis/python-api-common-protos/compare/v1.56.0...v1.56.1) (2022-05-05)
+## [1.56.1](https://github.com/googleapis/python-api-common-protos/compare/v1.56.0...v1.56.1) (2022-05-05)
 
 
 ### Bug Fixes
diff --git a/google/__init__.py b/google/__init__.py
deleted file mode 100644
index 9a1b64a..0000000
--- a/google/__init__.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright 2020 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-try:
-    import pkg_resources
-
-    pkg_resources.declare_namespace(__name__)
-except ImportError:
-    import pkgutil
-
-    __path__ = pkgutil.extend_path(__path__, __name__)
diff --git a/setup.py b/setup.py
index 66c4ce5..7195ff1 100644
--- a/setup.py
+++ b/setup.py
@@ -20,9 +20,9 @@
 
 name = "googleapis-common-protos"
 description = "Common protobufs used in Google APIs"
-version = "1.56.2"
+version = "1.56.3"
 release_status = "Development Status :: 5 - Production/Stable"
-dependencies = ["protobuf >= 3.15.0, <4.0.0dev"]
+dependencies = ["protobuf >= 3.15.0, <5.0.0dev"]
 
 extras_require = {"grpc": ["grpcio >= 1.0.0, <2.0.0dev"]}
 
diff --git a/testing/constraints-3.7.txt b/testing/constraints-3.7.txt
index e69de29..fcdc25e 100644
--- a/testing/constraints-3.7.txt
+++ b/testing/constraints-3.7.txt
@@ -0,0 +1,8 @@
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List *all* library dependencies and extras in this file.
+# Pin the version to the lower bound.
+#
+# e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
+# Then this file should have foo==1.14.0
+protobuf==3.15.0