diff --git a/Bitcoin/pubkey_to_scriptPubKey.hpp b/Bitcoin/pubkey_to_scriptPubKey.hpp
index 3196733ce..80d4c2f1d 100644
--- a/Bitcoin/pubkey_to_scriptPubKey.hpp
+++ b/Bitcoin/pubkey_to_scriptPubKey.hpp
@@ -1,6 +1,7 @@
 #ifndef BITCOIN_PUBKEY_TO_SCRIPTPUBKEY_HPP
 #define BITCOIN_PUBKEY_TO_SCRIPTPUBKEY_HPP
 
+#include<cstdint>
 #include<string>
 #include<vector>
 
diff --git a/Boltz/Detail/swaptree.hpp b/Boltz/Detail/swaptree.hpp
index 9b5acfef6..055d82d28 100644
--- a/Boltz/Detail/swaptree.hpp
+++ b/Boltz/Detail/swaptree.hpp
@@ -1,6 +1,7 @@
 #ifndef BOLTZ_DETAIL_SWAP_TREE_HPP
 #define BOLTZ_DETAIL_SWAP_TREE_HPP
 
+#include<cstdint>
 #include<string>
 #include<vector>
 
diff --git a/Secp256k1/TapscriptTree.hpp b/Secp256k1/TapscriptTree.hpp
index 9f3b133fa..70f7f6137 100644
--- a/Secp256k1/TapscriptTree.hpp
+++ b/Secp256k1/TapscriptTree.hpp
@@ -1,6 +1,7 @@
 #ifndef SECP256K1_TAPTREE_HPP
 #define SECP256K1_TAPTREE_HPP
 
+#include<cstdint>
 #include<stdexcept>
 #include<vector>
 
diff --git a/Secp256k1/tagged_hashes.hpp b/Secp256k1/tagged_hashes.hpp
index 63ee61246..9daa6de89 100644
--- a/Secp256k1/tagged_hashes.hpp
+++ b/Secp256k1/tagged_hashes.hpp
@@ -1,6 +1,7 @@
 #ifndef SECP256K1_TAGGED_HASHES_HPP
 #define SECP256K1_TAGGED_HASHES_HPP
 
+#include<cstdint>
 #include<string>
 
 namespace Tag {