--- a/build/unix/build-clang/build-clang.py
+++ b/build/unix/build-clang/build-clang.py
@@ -105,17 +105,17 @@ def build_one_stage_aux(stage_dir, is_st
     # arm support on Linux.
     if not isDarwin:
         targets.append("arm")
 
     configure_opts = ["--enable-optimized",
                       "--enable-targets=" + ",".join(targets),
                       "--disable-assertions",
                       "--prefix=%s" % inst_dir,
-                      "--with-gcc-toolchain=/tools/gcc-4.7.2-0moz1"]
+                      "--with-gcc-toolchain=/tools/gcc-4.7.3-0moz1"]
     build_package(llvm_source_dir, build_dir, configure_opts,
                   [])
 
 if isDarwin:
     os.environ['MACOSX_DEPLOYMENT_TARGET'] = '10.7'
 
 if not os.path.exists(source_dir):
     os.makedirs(source_dir)

--- a/build/unix/mozconfig.linux
+++ b/build/unix/mozconfig.linux
@@ -1,6 +1,6 @@
 . "$topsrcdir/build/mozconfig.common"
 
-CC="/tools/gcc-4.7.2-0moz1/bin/gcc"
-CXX="/tools/gcc-4.7.2-0moz1/bin/g++"
+CC="/tools/gcc-4.7.3-0moz1/bin/gcc"
+CXX="/tools/gcc-4.7.3-0moz1/bin/g++"
 
 ac_add_options --enable-elf-hack