diff --git a/pkgs/development/libraries/openbabel/default.nix b/pkgs/development/libraries/openbabel/default.nix
index a23382d3f892..fe12bbffa531 100644
--- a/pkgs/development/libraries/openbabel/default.nix
+++ b/pkgs/development/libraries/openbabel/default.nix
@@ -11,6 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-wQpgdfCyBAoh4pmj9j7wPTlMtraJ62w/EShxi/olVMY=";
   };
 
+  postPatch = ''
+    sed '1i#include <ctime>' -i include/openbabel/obutil.h # gcc12
+  '';
+
   buildInputs = [ zlib libxml2 eigen python cairo pcre swig rapidjson ];
 
   nativeBuildInputs = [ cmake pkg-config ];
diff --git a/pkgs/development/libraries/v8/default.nix b/pkgs/development/libraries/v8/default.nix
index 7ca5080cb74c..f61d0b6964ab 100644
--- a/pkgs/development/libraries/v8/default.nix
+++ b/pkgs/development/libraries/v8/default.nix
@@ -110,6 +110,7 @@ stdenv.mkDerivation rec {
         --replace "-Wl,-fatal_warnings" ""
     ''}
     touch build/config/gclient_args.gni
+    sed '1i#include <utility>' -i src/heap/cppgc/prefinalizer-handler.h # gcc12
   '';
 
   llvmCcAndBintools = symlinkJoin { name = "llvmCcAndBintools"; paths = [ stdenv.cc llvmPackages.llvm ]; };