diff --git a/src/Anon.h b/src/Anon.h
index 3b2e704083..ecda53f023 100644
--- a/src/Anon.h
+++ b/src/Anon.h
@@ -12,6 +12,7 @@
 
 #include <vector>
 #include <map>
+#include <cstdint>
 
 // TODO: Anon.h may not be the right place to put these functions ...
 
diff --git a/src/Notifier.h b/src/Notifier.h
index a3ae5188b7..d6618a5e5f 100644
--- a/src/Notifier.h
+++ b/src/Notifier.h
@@ -8,6 +8,7 @@
 #pragma once
 
 #include <unordered_map>
+#include <cstdint>
 
 namespace notifier  {
 
diff --git a/src/Reassem.h b/src/Reassem.h
index 4166f4dccb..079de77584 100644
--- a/src/Reassem.h
+++ b/src/Reassem.h
@@ -9,6 +9,7 @@
 #include <assert.h>
 #include <string.h>
 #include <sys/types.h> // for u_char
+#include <cstdint>
 
 // Whenever subclassing the Reassembler class
 // you should add to this for known subclasses.