diff --git a/include/rtdef.h b/include/rtdef.h
index 163e057fcbc..ef58ae37a3b 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -41,6 +41,7 @@
  * 2022-01-01     Gabriel      improve hooking method
  * 2022-01-07     Gabriel      move some __on_rt_xxxxx_hook to dedicated c source files
  * 2022-01-12     Meco Man     remove RT_THREAD_BLOCK
+ * 2022-04-20     Meco Man     change version number to v4.1.1
  */
 
 #ifndef __RT_DEF_H__
@@ -62,7 +63,7 @@ extern "C" {
 /* RT-Thread version information */
 #define RT_VERSION                      4L              /**< major version number */
 #define RT_SUBVERSION                   1L              /**< minor version number */
-#define RT_REVISION                     0L              /**< revise version number */
+#define RT_REVISION                     1L              /**< revise version number */
 
 /* RT-Thread version */
 #define RTTHREAD_VERSION                ((RT_VERSION * 10000) + \
diff --git a/src/Kconfig b/src/Kconfig
index cdcea1b96c8..06f001f4334 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -431,7 +431,7 @@ endmenu
 
 config RT_VER_NUM
     hex
-    default 0x40100
+    default 0x40101
     help
         RT-Thread version number