diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e9033b68f..d1c924eaa5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+### [0.26.5](https://www.github.com/googleapis/gapic-generator-python/compare/v0.26.4...v0.26.5) (2020-07-10)
+
+
+### Bug Fixes
+
+* convert datetime back to proto for unit tests ([#511](https://www.github.com/googleapis/gapic-generator-python/issues/511)) ([e1c787d](https://www.github.com/googleapis/gapic-generator-python/commit/e1c787d3b6fe09dc0b4e00f07a7bd77fb5f1e6a3))
+
 ### [0.26.4](https://www.github.com/googleapis/gapic-generator-python/compare/v0.26.3...v0.26.4) (2020-07-10)
 
 
diff --git a/setup.py b/setup.py
index bd95faae75..ffba7dca49 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
 
 PACKAGE_ROOT = os.path.abspath(os.path.dirname(__file__))
 
-version = "0.26.4"
+version = "0.26.5"
 
 with io.open(os.path.join(PACKAGE_ROOT, "README.rst")) as file_obj:
     README = file_obj.read()