diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7de25b4..0c76c6e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,7 @@
 # set version
 set(LIBNETCONF2_MAJOR_VERSION 0)
 set(LIBNETCONF2_MINOR_VERSION 11)
-set(LIBNETCONF2_MICRO_VERSION 20)
+set(LIBNETCONF2_MICRO_VERSION 21)
 set(LIBNETCONF2_VERSION ${LIBNETCONF2_MAJOR_VERSION}.${LIBNETCONF2_MINOR_VERSION}.${LIBNETCONF2_MICRO_VERSION})
 set(LIBNETCONF2_SOVERSION ${LIBNETCONF2_MAJOR_VERSION}.${LIBNETCONF2_MINOR_VERSION})