diff --git a/CMakeLists.txt b/CMakeLists.txt
index f326a0db..34283ad4 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ set(DROGON_MINOR_VERSION 0)
 set(DROGON_PATCH_VERSION 0)
 set(DROGON_VERSION
     ${DROGON_MAJOR_VERSION}.${DROGON_MINOR_VERSION}.${DROGON_PATCH_VERSION})
-set(DROGON_VERSION_STRING "${DROGON_VERSION}.beta14")
+set(DROGON_VERSION_STRING "${DROGON_VERSION}.beta15")
 
 # Offer the user the choice of overriding the installation directories
 set(INSTALL_LIB_DIR lib CACHE PATH "Installation directory for libraries")
diff --git a/ChangeLog.md b/ChangeLog.md
index 72ca4176..68a828e9 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -4,6 +4,44 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [1.0.0-beta15] - 2020-03-28
+
+### API change list
+
+- Modify the Attributes interface of the HttpRequest class
+
+- Add the getHomePage() method to HttpAppFramework
+
+### Changed
+
+- Support br compression files
+
+- Update Content-Type support for PDF
+
+- Add support for MSVC 2015
+
+- Optimize the rendering of HTTP responses
+
+- Update the Dynamic Views Loading, add the `layout` tag
+
+- Graceful shutdown
+
+### Fixed
+
+- Fix error when finding the jsoncpp library
+
+- Fix the 'many to many' relationship in ORM
+
+- Fix a bug when creating json responses
+
+- Fix a bug on filters with WebSocketControllers
+
+- Fix a fatal bug in the MysqlConnection class
+
+- Fix crash with partial matched url
+
+- Fix null jsonObject from newHttpJsonRequest
+
 ## [1.0.0-beta14] - 2020-02-17
 
 ### API change list
@@ -306,7 +344,9 @@ All notable changes to this project will be documented in this file.
 
 ## [1.0.0-beta1] - 2019-06-11
 
-[Unreleased]: https://github.com/an-tao/drogon/compare/v1.0.0-beta14...HEAD
+[Unreleased]: https://github.com/an-tao/drogon/compare/v1.0.0-beta15...HEAD
+
+[1.0.0-beta15]: https://github.com/an-tao/drogon/compare/v1.0.0-beta14...v1.0.0-beta15
 
 [1.0.0-beta14]: https://github.com/an-tao/drogon/compare/v1.0.0-beta13...v1.0.0-beta14
 
diff --git a/trantor b/trantor
index 0415747a..ba5b99fb 160000
--- a/trantor
+++ b/trantor
@@ -1 +1 @@
-Subproject commit 0415747a7e2bbf1950d924544ff7855b1ad8da6f
+Subproject commit ba5b99fb89f05f4fbd18bd230d02abc6f12d8552