diff --git a/CMakeLists.txt b/CMakeLists.txt
index e9a4a8c0a..3c28ccb94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,7 +47,7 @@ message(STATUS "Enabled languages: ${languages}")
 
 project(k2 ${languages})
 
-set(K2_VERSION "1.20")
+set(K2_VERSION "1.21")
 
 # ----------------- Supported build types for K2 project -----------------
 set(K2_ALLOWABLE_BUILD_TYPES Debug Release RelWithDebInfo MinSizeRel)