diff --git a/compat-libgfortran-41.spec b/compat-libgfortran-41.spec
index 0d6fa0e..0ae686e 100644
--- a/compat-libgfortran-41.spec
+++ b/compat-libgfortran-41.spec
@@ -3,7 +3,7 @@
 Summary: Compatibility Fortran 95 runtime library version 4.1.2
 Name: compat-libgfortran-41
 Version: 4.1.2
-Release: 44
+Release: 45
 # libgfortran has an exception which allows
 # linking it into any kind of programs or shared libraries without
 # restrictions.
@@ -23,6 +23,9 @@ with GCC 4.1.x-RH compiled Fortran applications.
 %setup -q -n libgfortran-%{version}-%{DATE}
 %patch1 -p0 -b .gthr~
 
+# Update config.guess/sub to fix builds on new architectures (aarch64/ppc64le)
+cp /usr/lib/rpm/config.* .
+
 %build
 mkdir obj
 cd obj
@@ -48,6 +51,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/libgfortran.so.1*
 
 %changelog
+* Wed Jun 18 2014 Peter Robinson <pbrobinson@fedoraproject.org> 4.1.2-45
+- Update config.guess/sub for new arches
+
 * Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-44
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild