diff --git a/host/include/uhd/cal/database.hpp b/host/include/uhd/cal/database.hpp
index b6abbb6df..44edf1e63 100644
--- a/host/include/uhd/cal/database.hpp
+++ b/host/include/uhd/cal/database.hpp
@@ -11,6 +11,7 @@
 #include <string>
 #include <vector>
 #include <functional>
+#include <cstdint>
 
 namespace uhd { namespace usrp { namespace cal {
 
diff --git a/host/include/uhd/rfnoc/defaults.hpp b/host/include/uhd/rfnoc/defaults.hpp
index d0f6c2311..f9cf1353e 100644
--- a/host/include/uhd/rfnoc/defaults.hpp
+++ b/host/include/uhd/rfnoc/defaults.hpp
@@ -9,6 +9,7 @@
 #pragma once
 
 #include <string>
+#include <cstdint>
 
 namespace uhd { namespace rfnoc {
 
diff --git a/host/include/uhd/types/eeprom.hpp b/host/include/uhd/types/eeprom.hpp
index 3a7605d3c..2b3c5c05e 100644
--- a/host/include/uhd/types/eeprom.hpp
+++ b/host/include/uhd/types/eeprom.hpp
@@ -9,6 +9,7 @@
 #include <map>
 #include <string>
 #include <vector>
+#include <cstdint>
 
 namespace uhd {
 
diff --git a/host/lib/utils/serial_number.cpp b/host/lib/utils/serial_number.cpp
index 61296a913..a36e7848b 100644
--- a/host/lib/utils/serial_number.cpp
+++ b/host/lib/utils/serial_number.cpp
@@ -7,6 +7,7 @@
 #include <uhdlib/utils/serial_number.hpp>
 #include <stdexcept>
 #include <string>
+#include <cstdint>
 
 namespace uhd { namespace utils {
    bool serial_numbers_match(const std::string& serial_a, const std::string& serial_b)