diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7a547fb01..07040c975 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,13 +14,13 @@
 cmake_minimum_required(VERSION 3.14)
 
 project(re
-  VERSION 3.14.0
+  VERSION 3.15.0
   LANGUAGES C
   HOMEPAGE_URL https://github.com/baresip/re
   DESCRIPTION "Generic library for real-time communications"
 )
 
-set(PROJECT_SOVERSION 26) # bump if ABI breaks
+set(PROJECT_SOVERSION 27) # bump if ABI breaks
 
 # Pre-release identifier, comment out on a release
 # Increment for breaking changes (dev2, dev3...)
diff --git a/mk/Doxyfile b/mk/Doxyfile
index 6cb70eea3..20df6eefd 100644
--- a/mk/Doxyfile
+++ b/mk/Doxyfile
@@ -4,7 +4,7 @@
 # Project related configuration options
 #---------------------------------------------------------------------------
 PROJECT_NAME           = libre
-PROJECT_NUMBER         = 3.14.0
+PROJECT_NUMBER         = 3.15.0
 OUTPUT_DIRECTORY       = ../re-dox
 CREATE_SUBDIRS         = NO
 OUTPUT_LANGUAGE        = English