diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e2d359a1..8f9154b5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,15 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Added
 
+### Changed
+
+### Fixed
+
+
+## [2.15.6] - 2020-06-27
+
+### Added
+
 * Add `IdSetSmall::merge_sorted` function.
 
 ### Changed
@@ -1023,7 +1032,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   Doxygen (up to version 1.8.8). This version contains a workaround to fix
   this.
 
-[unreleased]: https://github.com/osmcode/libosmium/compare/v2.15.5...HEAD
+[unreleased]: https://github.com/osmcode/libosmium/compare/v2.15.6...HEAD
+[2.15.6]: https://github.com/osmcode/libosmium/compare/v2.15.5...v2.15.6
 [2.15.5]: https://github.com/osmcode/libosmium/compare/v2.15.4...v2.15.5
 [2.15.4]: https://github.com/osmcode/libosmium/compare/v2.15.3...v2.15.4
 [2.15.3]: https://github.com/osmcode/libosmium/compare/v2.15.2...v2.15.3
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55e7743dd..c698acb03 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,7 +40,7 @@ project(libosmium)
 
 set(LIBOSMIUM_VERSION_MAJOR 2)
 set(LIBOSMIUM_VERSION_MINOR 15)
-set(LIBOSMIUM_VERSION_PATCH 5)
+set(LIBOSMIUM_VERSION_PATCH 6)
 
 set(LIBOSMIUM_VERSION
     "${LIBOSMIUM_VERSION_MAJOR}.${LIBOSMIUM_VERSION_MINOR}.${LIBOSMIUM_VERSION_PATCH}")
diff --git a/include/osmium/version.hpp b/include/osmium/version.hpp
index ebb2c15e1..c83af2b03 100644
--- a/include/osmium/version.hpp
+++ b/include/osmium/version.hpp
@@ -35,8 +35,8 @@ DEALINGS IN THE SOFTWARE.
 
 #define LIBOSMIUM_VERSION_MAJOR 2
 #define LIBOSMIUM_VERSION_MINOR 15
-#define LIBOSMIUM_VERSION_PATCH 5
+#define LIBOSMIUM_VERSION_PATCH 6
 
-#define LIBOSMIUM_VERSION_STRING "2.15.5"
+#define LIBOSMIUM_VERSION_STRING "2.15.6"
 
 #endif // OSMIUM_VERSION_HPP