Release google-api-core 1.0.0 (#4945)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca01d4f..b1f120a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,16 @@
 
 [1]: https://pypi.org/project/google-api-core/#history
 
+## 1.0.0
+
+This is the stable v1.0.0 release of google-api-core for Python. Releases after
+this will not contain breaking changes.
+
+### Interface changes and additions
+
+- Made `api_core.page_iterator.PageIterator.item_to_value` public
+- Added ability to specify retry for `Operation` and `polling.Future`. (#4922)
+
 ## 0.1.4
 
 ### New Features
diff --git a/setup.py b/setup.py
index 269a662..a26310a 100644
--- a/setup.py
+++ b/setup.py
@@ -22,7 +22,7 @@
 
 name = 'google-api-core'
 description = 'Google API client core library'
-version = '0.1.5.dev1'
+version = '1.0.0'
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'