diff --git a/decode.cc b/decode.cc
index bc52a53..8de1b91 100644
--- a/decode.cc
+++ b/decode.cc
@@ -4,7 +4,9 @@ OFDM modem decoder
 Copyright 2021 Ahmet Inan <inan@aicodix.de>
 */
 
+#include <iomanip>
 #include <iostream>
+#include <cstdint>
 #include <cassert>
 #include <cmath>
 namespace DSP { using std::abs; using std::min; using std::cos; using std::sin; }
diff --git a/encode.cc b/encode.cc
index 7770ccc..856c3ed 100644
--- a/encode.cc
+++ b/encode.cc
@@ -4,7 +4,9 @@ OFDM modem encoder
 Copyright 2021 Ahmet Inan <inan@aicodix.de>
 */
 
+#include <iomanip>
 #include <iostream>
+#include <cstdint>
 #include <cassert>
 #include <cmath>
 #include "common.hh"