diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1924937..201cf6c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,6 +92,8 @@ include_directories(${ZTO_SRC_DIR}/osdep)
 # ZeroTier (ext)
 #include_directories(${ZTO_SRC_DIR}/ext/miniupnpc)
 include_directories(${ZTO_SRC_DIR}/ext/libnatpmp)
+include_directories(${ZTO_SRC_DIR}/ext/prometheus-cpp-lite-1.0/core/include)
+include_directories(${ZTO_SRC_DIR}/ext/prometheus-cpp-lite-1.0/simpleapi/include)
 # libzt
 include_directories(${PROJ_DIR}/src)
 include_directories(${PROJ_DIR}/include)