diff --git a/src/Http/strCoding.h b/src/Http/strCoding.h
index 4be8328e..00177f74 100644
--- a/src/Http/strCoding.h
+++ b/src/Http/strCoding.h
@@ -13,7 +13,7 @@
 
 #include <iostream>
 #include <string>
-
+#include <cstdint>
 namespace mediakit {
 
 class strCoding {
diff --git a/src/Record/HlsMaker.h b/src/Record/HlsMaker.h
index 57a5308a..be20ba1b 100644
--- a/src/Record/HlsMaker.h
+++ b/src/Record/HlsMaker.h
@@ -14,6 +14,7 @@
 #include <string>
 #include <deque>
 #include <tuple>
+#include <cstdint>
 
 namespace mediakit {
 
diff --git a/src/Rtmp/amf.h b/src/Rtmp/amf.h
index 283fbcc7..276315cf 100644
--- a/src/Rtmp/amf.h
+++ b/src/Rtmp/amf.h
@@ -16,6 +16,7 @@
 #include <vector>
 #include <map>
 #include <functional>
+#include <cstdint>
 namespace toolkit {
     class BufferLikeString;
 }