diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b165acc..a2cc9eab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -370,6 +370,9 @@ if (USE_OCC)
         list(PREPEND OCC_LIBRARIES -Wl,--start-group)
         list(APPEND OCC_LIBRARIES -Wl,--end-group)
       endif()
+      if(WIN32)
+          list(APPEND OCC_LIBRARIES Ws2_32.lib)
+      endif()
     endif()
     message(STATUS "OCC DIRS ${OpenCASCADE_INCLUDE_DIR}")
 endif (USE_OCC)