diff --git a/RELEASES.md b/RELEASES.md
index edfc7c17f3..51d2ff0c8d 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -8,6 +8,21 @@ This file contains work-in-progress notes for the upcoming release, as well as p
 Please check the [releases](https://github.com/leanprover/lean4/releases) page for the current status
 of each version.
 
+v4.15.0
+----------
+
+Development in progress.
+
+v4.14.0
+----------
+
+Release candidate, release notes will be copied from the branch `releases/v4.14.0` once completed.
+
+v4.13.0
+----------
+
+Release candidate, release notes will be copied from the branch `releases/v4.13.0` once completed.
+
 v4.12.0
 ----------
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1ddb9907d8..9927c8bb71 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,7 +10,7 @@ endif()
 include(ExternalProject)
 project(LEAN CXX C)
 set(LEAN_VERSION_MAJOR 4)
-set(LEAN_VERSION_MINOR 14)
+set(LEAN_VERSION_MINOR 15)
 set(LEAN_VERSION_PATCH 0)
 set(LEAN_VERSION_IS_RELEASE 0)  # This number is 1 in the release revision, and 0 otherwise.
 set(LEAN_SPECIAL_VERSION_DESC "" CACHE STRING "Additional version description like 'nightly-2018-03-11'")