diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c565e2..1a8bb73 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,7 +135,7 @@ include_directories ("${LIBZT_SRC_DIR}")
 include_directories ("${PROJ_DIR}/include")
 file (GLOB libzt_src_glob ${LIBZT_SRC_DIR}/*.cpp)
 add_library (zt ${libzt_src_glob})
-target_link_libraries (zt lwip zto)
+target_link_libraries (zt pthread lwip zto)
 if (WIN32)
 	target_link_libraries (zto ws2_32)
 	target_link_libraries (zto ${lshlwapi_LIBRARY_PATH})