diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 1d4d371..9780b1c 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -157,7 +157,7 @@
 
 if(USE_SHARED_MBEDTLS_LIBRARY)
     add_library(mbedcrypto SHARED ${src_crypto})
-    set_target_properties(mbedcrypto PROPERTIES VERSION 2.20.0 SOVERSION 4)
+    set_target_properties(mbedcrypto PROPERTIES VERSION 2.21.0 SOVERSION 4)
     target_link_libraries(mbedcrypto ${libs})
     target_include_directories(mbedcrypto
         PUBLIC ${MBEDTLS_DIR}/include/