diff --git a/pkgs/applications/blockchains/sumokoin/default.nix b/pkgs/applications/blockchains/sumokoin/default.nix
index ce7bdbfe894d..8fdf387ef78b 100644
--- a/pkgs/applications/blockchains/sumokoin/default.nix
+++ b/pkgs/applications/blockchains/sumokoin/default.nix
@@ -43,6 +43,8 @@ stdenv.mkDerivation rec {
     zeromq
   ];
 
+  env.CXXFLAGS = "-include cstdint";
+
   # cc1: error: '-Wformat-security' ignored without '-Wformat' [-Werror=format-security]
   hardeningDisable = [ "format" ];