diff --git a/windows/static-x86/readme.txt b/windows/static-x86/readme.txt
index da25c199f92f7c53171a196441124bf93355da8b..1e755e70a2e9544771060a2bde30d789b8ad97bc 100644
--- a/windows/static-x86/readme.txt
+++ b/windows/static-x86/readme.txt
@@ -1,7 +1,11 @@
 When you use uFCoder static library, you must define DL_USE_STATIC_LIB macro before include uFCoder.h
+
 Also you must setup linking FTDI d2xx library in your project. FTDI distribute their library on its website http://www.ftdichip.com/Drivers/D2XX.htm
 They stated in ftd2xx.h:
 // Static D2XX depends on these Windows libs:
 #pragma comment(lib, "setupapi.lib")
 #pragma comment(lib, "advapi32.lib")
 #pragma comment(lib, "user32.lib")
+
+After uFR-library version 4.4.1 an additional library [ws2_32.lib] must be included to support UDP transfer protocol
+#pragma comment(lib, "ws2_32.lib")
diff --git a/windows/static-x86_64/readme.txt b/windows/static-x86_64/readme.txt
index da25c199f92f7c53171a196441124bf93355da8b..1e755e70a2e9544771060a2bde30d789b8ad97bc 100644
--- a/windows/static-x86_64/readme.txt
+++ b/windows/static-x86_64/readme.txt
@@ -1,7 +1,11 @@
 When you use uFCoder static library, you must define DL_USE_STATIC_LIB macro before include uFCoder.h
+
 Also you must setup linking FTDI d2xx library in your project. FTDI distribute their library on its website http://www.ftdichip.com/Drivers/D2XX.htm
 They stated in ftd2xx.h:
 // Static D2XX depends on these Windows libs:
 #pragma comment(lib, "setupapi.lib")
 #pragma comment(lib, "advapi32.lib")
 #pragma comment(lib, "user32.lib")
+
+After uFR-library version 4.4.1 an additional library [ws2_32.lib] must be included to support UDP transfer protocol
+#pragma comment(lib, "ws2_32.lib")