diff --git a/CMakeLists.txt b/CMakeLists.txt
index ccf9043..9c4959a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,7 +61,7 @@
 # set version of the project
 set(LIBYANG_MAJOR_VERSION 2)
 set(LIBYANG_MINOR_VERSION 1)
-set(LIBYANG_MICRO_VERSION 39)
+set(LIBYANG_MICRO_VERSION 40)
 set(LIBYANG_VERSION ${LIBYANG_MAJOR_VERSION}.${LIBYANG_MINOR_VERSION}.${LIBYANG_MICRO_VERSION})
 # set version of the library
 set(LIBYANG_MAJOR_SOVERSION 2)