diff --git a/documentation/introduction/introduction.md b/documentation/introduction/introduction.md
index a4665d6ae89a71725a23fe33268077cff4ff4e9c..1ba59bbb09abbeea99cde03940db5c32cb6ddb2e 100644
--- a/documentation/introduction/introduction.md
+++ b/documentation/introduction/introduction.md
@@ -12,7 +12,7 @@ Compared with the Linux operating system, RT-Thread is small in size, low in cos
 
 ## License Agreement
 
-The RT-Thread system is a completely open source system, the 3.1.0 version and its earlier versions follow the GPL V2 + open source license agreement. Versions from the 3.1.0 version onwards follow the Apache License 2.0 open source license agreement. The RT-Thread system can be used free of charge in commercial products and does not require opening private code up to the public.
+The RT-Thread system is a completely open source system, which follows the Apache License 2.0 open source license agreement. The RT-Thread system can be used free of charge in commercial products and does not require opening private code up to the public.
 
 ## RT-Thread Frame