diff --git a/srcpkgs/libbitcoin-system/patches/gcc12.patch b/srcpkgs/libbitcoin-system/patches/gcc12.patch
new file mode 100644
index 00000000000..0347ac22d21
--- /dev/null
+++ b/srcpkgs/libbitcoin-system/patches/gcc12.patch
@@ -0,0 +1,10 @@
+--- a/include/bitcoin/bitcoin/wallet/dictionary.hpp
++++ b/include/bitcoin/bitcoin/wallet/dictionary.hpp
+@@ -22,6 +22,7 @@
+ #include <array>
+ #include <vector>
+ #include <bitcoin/bitcoin/compat.hpp>
++#include <cstddef>
+ 
+ namespace libbitcoin {
+ namespace wallet {