diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ea5718..24a61ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.5.3] - 2019-12-03
 ### Added
 - Honor CMake's builtin `CMAKE_SKIP_INSTALL_RULES`
 
@@ -267,7 +269,8 @@
 - Constants `AVIF_VERSION`, `AVIF_VERSION_MAJOR`, `AVIF_VERSION_MINOR`, `AVIF_VERSION_PATCH`
 - `avifVersion()` function
 
-[Unreleased]: https://github.com/AOMediaCodec/libavif/compare/v0.5.2...HEAD
+[Unreleased]: https://github.com/AOMediaCodec/libavif/compare/v0.5.3...HEAD
+[0.5.3]: https://github.com/AOMediaCodec/libavif/compare/v0.5.2...v0.5.3
 [0.5.2]: https://github.com/AOMediaCodec/libavif/compare/v0.5.1...v0.5.2
 [0.5.1]: https://github.com/AOMediaCodec/libavif/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/AOMediaCodec/libavif/compare/v0.4.8...v0.5.0
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7aac87e..fd8d01e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: BSD-2-Clause
 
 cmake_minimum_required(VERSION 3.5)
-project(libavif LANGUAGES C VERSION 0.5.2)
+project(libavif LANGUAGES C VERSION 0.5.3)
 
 # SOVERSION scheme: CURRENT.AGE.REVISION
 #   If there was an incompatible interface change:
@@ -11,7 +11,7 @@
 #     Increment AGE. Set REVISION to 0
 #   If the source code was changed, but there were no interface changes:
 #     Increment REVISION.
-set(LIBRARY_VERSION "0.1.2")
+set(LIBRARY_VERSION "0.1.3")
 set(LIBRARY_SOVERSION "0")
 
 if(CMAKE_C_COMPILER_ID MATCHES "GNU")
diff --git a/include/avif/avif.h b/include/avif/avif.h
index ca99c33..accb942 100644
--- a/include/avif/avif.h
+++ b/include/avif/avif.h
@@ -16,7 +16,7 @@
 
 #define AVIF_VERSION_MAJOR 0
 #define AVIF_VERSION_MINOR 5
-#define AVIF_VERSION_PATCH 2
+#define AVIF_VERSION_PATCH 3
 #define AVIF_VERSION (AVIF_VERSION_MAJOR * 10000) + (AVIF_VERSION_MINOR * 100) + AVIF_VERSION_PATCH
 
 typedef int avifBool;