diff --git a/_service b/_service
index cbcbf68..2dfadc4 100644
--- a/_service
+++ b/_service
@@ -3,8 +3,8 @@
     <param name="url">https://github.com/sekrit-twc/zimg.git</param>
     <param name="scm">git</param>
     <param name="versionformat">@PARENT_TAG@</param>
-    <param name="versionrewrite-pattern">release([0-9\.]*)</param>
-    <param name="revision">release-3.0.1</param>
+    <param name="versionrewrite-pattern">release-([0-9\.]*)</param>
+    <param name="revision">release-3.0.3</param>
   </service>
   <service name="tar" mode="buildtime" />
   <service name="recompress" mode="buildtime">
diff --git a/zimg-3.0.1.obscpio b/zimg-3.0.1.obscpio
deleted file mode 100644
index b781a36..0000000
--- a/zimg-3.0.1.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:bbc514a114145d2cb895463c4eb046329f77da26df5758875144d95d1209f603
-size 6154765
diff --git a/zimg-3.0.3.obscpio b/zimg-3.0.3.obscpio
new file mode 100644
index 0000000..e6cf76c
--- /dev/null
+++ b/zimg-3.0.3.obscpio
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b375f776b0b404c307fc3ea962572236eb29c9642d271731ac855114df2c22c2
+size 6158349
diff --git a/zimg-s390x-unit-tests.patch b/zimg-s390x-unit-tests.patch
new file mode 100644
index 0000000..e4a7b66
--- /dev/null
+++ b/zimg-s390x-unit-tests.patch
@@ -0,0 +1,60 @@
+From b2bee8460a0f6ecf049e27d0a2090c87e871d951 Mon Sep 17 00:00:00 2001
+From: Mike Gorse <mgorse@suse.com>
+Date: Wed, 22 Sep 2021 11:57:47 -0500
+Subject: [PATCH] FIx unit tests on big endian systems
+
+---
+ test/extra/sha1/config.h        | 6 ++++++
+ test/graph/filter_validator.cpp | 8 ++++++++
+ 2 files changed, 14 insertions(+)
+
+diff --git a/test/extra/sha1/config.h b/test/extra/sha1/config.h
+index ea853f0..7bc4e00 100644
+--- a/test/extra/sha1/config.h
++++ b/test/extra/sha1/config.h
+@@ -1,3 +1,5 @@
++#include <endian.h>
++
+ #ifndef LITTLE_ENDIAN
+   #define LITTLE_ENDIAN 4321
+ #endif
+@@ -7,5 +9,9 @@
+ #endif
+ 
+ #ifndef BYTE_ORDER
++#if defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN)
++  #define BYTE_ORDER BIG_ENDIAN
++#else
+   #define BYTE_ORDER LITTLE_ENDIAN
+ #endif
++#endif
+diff --git a/test/graph/filter_validator.cpp b/test/graph/filter_validator.cpp
+index f0d6859..d768ebf 100644
+--- a/test/graph/filter_validator.cpp
++++ b/test/graph/filter_validator.cpp
+@@ -13,6 +13,8 @@
+ 
+ #include "gtest/gtest.h"
+ 
++#include <endian.h>
++
+ extern "C" {
+   #include "sha1/sha1.h"
+ }
+@@ -40,7 +42,13 @@ void hash_buffer(const AuditBuffer<T> &buf, unsigned p, unsigned width, unsigned
+ 
+ 	for (unsigned i = 0; i < height; ++i) {
+ 		const unsigned char *ptr = static_cast<const unsigned char *>(image_buffer[p][i]);
++#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+ 		SHA1Update(&sha_ctx, ptr, width * sizeof(T));
++#else
++		for (unsigned j = 0; j < width; j++)
++			for (int k = sizeof(T) - 1; k >= 0; k--)
++				SHA1Update(&sha_ctx, ptr + (j * sizeof(T)) + k, 1);
++#endif
+ 	}
+ 
+ 	SHA1Final(digest, &sha_ctx);
+-- 
+2.32.0
+
diff --git a/zimg.changes b/zimg.changes
index ab98d3b..bc15afa 100644
--- a/zimg.changes
+++ b/zimg.changes
@@ -1,3 +1,21 @@
+-------------------------------------------------------------------
+Wed Sep 22 17:19:43 UTC 2021 - Michael Gorse <mgorse@suse.com>
+
+- Update to 3.0.3:
+  * depth: fix out-of-bounds read in SSE2/AVX2 error diffusion
+    (introduced in 2.5)
+  * colorspace: revert SMPTE 240M behavior change (introduced in
+    3.0.2)
+  * Changes in version 3.0.2:
+  * api: default to ZIMG_CPU_AUTO when graph params are null
+  * colorspace: fix incorrect SMPTE 240M transfer function
+  * colorspace: fix underflow in AVX-512 ST.2084 transfer functions
+  * graph: fix conversion from fullrange grey to RGB
+  * arm: fix data alignment
+  * x86: optimizations for AMD Zen3 processors
+- Add zimg-s390x-unit-tests.patch: fix unit tests on big endian
+  systems. 
+
 -------------------------------------------------------------------
 Thu Sep 10 17:43:22 UTC 2020 - Dirk Mueller <dmueller@suse.com>
 
diff --git a/zimg.obsinfo b/zimg.obsinfo
index 11c4c4a..cc8febd 100644
--- a/zimg.obsinfo
+++ b/zimg.obsinfo
@@ -1,5 +1,5 @@
 name: zimg
-version: 3.0.1
-mtime: 1598190477
-commit: e17ee6cf72509c32c15067b32615849e69486367
+version: 3.0.3
+mtime: 1630862474
+commit: 1658ce429cf944e88868a88d8aef4683425d4e78
 
diff --git a/zimg.spec b/zimg.spec
index 2b78f40..cbe9ca4 100644
--- a/zimg.spec
+++ b/zimg.spec
@@ -18,7 +18,7 @@
 
 %define         sover 2
 Name:           zimg
-Version:        3.0.1
+Version:        3.0.3
 Release:        0
 Summary:        Scaling, colorspace conversion, and dithering library
 License:        WTFPL
@@ -26,6 +26,7 @@ Group:          Development/Libraries/C and C++
 URL:            https://github.com/sekrit-twc/zimg
 Source0:        zimg-%{version}.tar.xz
 Source99:       baselibs.conf
+Patch0:         zimg-s390x-unit-tests.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  cmake
@@ -56,6 +57,7 @@ developing applications that use libzimg%{sover}.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 autoreconf -fiv