diff --git a/src/currency.h b/src/currency.h
index b06337717b..4899687d6f 100644
--- a/src/currency.h
+++ b/src/currency.h
@@ -13,6 +13,7 @@
 #include "date_type.h"
 #include "settings_type.h"
 #include "strings_type.h"
+#include <array>
 
 static const int CF_NOEURO = 0; ///< Currency never switches to the Euro (as far as known).
 static const int CF_ISEURO = 1; ///< Currency _is_ the Euro.
diff --git a/src/economy_type.h b/src/economy_type.h
index ce65d5dba7..abced898bc 100644
--- a/src/economy_type.h
+++ b/src/economy_type.h
@@ -12,6 +12,7 @@
 
 #include "core/overflowsafe_type.hpp"
 #include "core/enum_type.hpp"
+#include <array>
 
 typedef OverflowSafeInt64 Money;
 
diff --git a/src/highscore.h b/src/highscore.h
index d3a779dfbc..ac9c86c357 100644
--- a/src/highscore.h
+++ b/src/highscore.h
@@ -13,6 +13,7 @@
 #include "strings_type.h"
 #include "company_type.h"
 #include "settings_type.h"
+#include <array>
 
 struct HighScore {
 	std::string name; ///< The name of the companyy and president.
diff --git a/src/network/network_crypto_internal.h b/src/network/network_crypto_internal.h
index e2b11997c6..6d34c887a9 100644
--- a/src/network/network_crypto_internal.h
+++ b/src/network/network_crypto_internal.h
@@ -11,6 +11,7 @@
 #define NETWORK_CRYPTO_INTERNAL_H
 
 #include "network_crypto.h"
+#include <array>
 
 /** The number of bytes the public and secret keys are in X25519. */
 constexpr size_t X25519_KEY_SIZE = 32;
diff --git a/src/town.h b/src/town.h
index 81cd85e3ae..62a2b74496 100644
--- a/src/town.h
+++ b/src/town.h
@@ -19,6 +19,7 @@
 #include "table/strings.h"
 #include "company_func.h"
 #include "core/tinystring_type.hpp"
+#include <array>
 #include <list>
 #include <memory>