diff --git a/pkgs/development/libraries/libjson-rpc-cpp/default.nix b/pkgs/development/libraries/libjson-rpc-cpp/default.nix
index 2cfede1eb6e..ca60f1570bc 100644
--- a/pkgs/development/libraries/libjson-rpc-cpp/default.nix
+++ b/pkgs/development/libraries/libjson-rpc-cpp/default.nix
@@ -18,6 +18,8 @@ stdenv.mkDerivation rec {
     rev = "c6e3d7195060774bf95afc6df9c9588922076d3e";
   };
 
+  hardeningDisable = [ "format" ];
+
   patchPhase = ''
     for f in cmake/FindArgtable.cmake \
              src/stubgenerator/stubgenerator.cpp \