diff --git a/0001-enable-arrch64.patch b/0001-enable-arrch64.patch
new file mode 100644
index 0000000..155d97d
--- /dev/null
+++ b/0001-enable-arrch64.patch
@@ -0,0 +1,12 @@
+diff -ur Random123-1.09.orig/include/Random123/features/gccfeatures.h Random123-1.09/include/Random123/features/gccfeatures.h
+--- Random123-1.09.orig/include/Random123/features/gccfeatures.h	2018-12-28 18:15:37.119315452 +0000
++++ Random123-1.09/include/Random123/features/gccfeatures.h	2018-12-28 18:16:08.363157300 +0000
+@@ -34,7 +34,7 @@
+ 
+ #define R123_GNUC_VERSION (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__)
+ 
+-#if !defined(__x86_64__) && !defined(__i386__) && !defined(__powerpc__)
++#if !defined(__x86_64__) && !defined(__i386__) && !defined(__powerpc__)  && !defined(__aarch64__)
+ #  error "This code has only been tested on x86 and powerpc platforms."
+ #include <including_a_nonexistent_file_will_stop_some_compilers_from_continuing_with_a_hopeless_task>
+ { /* maybe an unbalanced brace will terminate the compilation */
diff --git a/Random123.spec b/Random123.spec
index 320e941..68ffd59 100644
--- a/Random123.spec
+++ b/Random123.spec
@@ -2,12 +2,15 @@
 
 Name:       Random123
 Version:    1.09
-Release:    6%{?dist}
+Release:    7%{?dist}
 Summary:    Library of random number generators
 
 License:    BSD
 URL:        http://www.deshawresearch.com/resources_random123.html
 Source0:    http://www.deshawresearch.com/downloads/download_random123.cgi/%{name}-%{version}.tar.gz
+# works on aarch64
+# https://github.com/neuronsimulator/nrn/pull/115/files
+Patch0:     0001-enable-arrch64.patch
 # gccfeatures.h has a check that only permits building on x86 x86_64 and ppc
 # I'd rather not remove the check
 ExcludeArch:    %{arm} mips64r2 mips32r2 s390 s390x
@@ -78,7 +81,7 @@ Random123 library can be used with CPU (C and C++) and GPU (CUDA and OpenCL)
 applications.
 
 %prep
-%setup -q
+%autosetup -p1 -S patch
 
 
 %build
@@ -103,6 +106,9 @@ cp -a include/Random123/*  $RPM_BUILD_ROOT/%{_includedir}/%{name}/
 %doc examples
 
 %changelog
+* Fri Dec 28 2018 Ankur Sinha <ankursinha AT fedoraproject DOT org> - 1.09-7
+- Add aarch64 patch
+
 * Thu Jul 12 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1.09-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild