v0.5.5
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16b1a07..5cb5800 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]
+
+## [0.5.5] - 2020-02-13
 ### Added
 - Enable still picture mode with rav1e >= 0.3.0 (cryptomilk)
 - Basic test suite (aviftest, rough draft)
@@ -286,7 +288,8 @@
 - Constants `AVIF_VERSION`, `AVIF_VERSION_MAJOR`, `AVIF_VERSION_MINOR`, `AVIF_VERSION_PATCH`
 - `avifVersion()` function
 
-[Unreleased]: https://github.com/AOMediaCodec/libavif/compare/v0.5.4...HEAD
+[Unreleased]: https://github.com/AOMediaCodec/libavif/compare/v0.5.5...HEAD
+[0.5.5]: https://github.com/AOMediaCodec/libavif/compare/v0.5.4...v0.5.5
 [0.5.4]: https://github.com/AOMediaCodec/libavif/compare/v0.5.3...v0.5.4
 [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
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b279661..76b1c26 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 0.5.4)
+project(libavif LANGUAGES C VERSION 0.5.5)
 
 # 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 "0.1.4")
+set(LIBRARY_VERSION "0.1.5")
 set(LIBRARY_SOVERSION "0")
 
 if(CMAKE_C_COMPILER_ID MATCHES "GNU")
diff --git a/include/avif/avif.h b/include/avif/avif.h
index 349dcc3..6051065 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 4
+#define AVIF_VERSION_PATCH 5
 #define AVIF_VERSION (AVIF_VERSION_MAJOR * 10000) + (AVIF_VERSION_MINOR * 100) + AVIF_VERSION_PATCH
 
 typedef int avifBool;