diff --git a/README.OpenSource b/README.OpenSource
index 335eca6e49998e013d3d4ec659a83c55c3519a79..06295fa6c3bfb7373139f856da0e22a566d300b4 100644
--- a/README.OpenSource
+++ b/README.OpenSource
@@ -3,9 +3,9 @@
         "Name"                  : "libwebsockets",
         "License"               : "The MIT License",
         "License File"          : "LICENSE",
-        "Version Number"        : "v4.0.2",
+        "Version Number"        : "v4.0.20",
         "Owner"                 : "lichunlin2@huawei.com",
         "Upstream URL"          : "https://libwebsockets.org",
         "Description"           : "Libwebsockets (LWS) is a flexible, lightweight pure C library for implementing modern network protocols easily with a tiny footprint, using a nonblocking event loop."
     }
-]
\ No newline at end of file
+]