diff --git a/.gitignore b/.gitignore
index 660d549..ac202a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /1.2.0.tar.gz
 /1.2.1.tar.gz
 /1.2.2.tar.gz
+/1.2.3.tar.gz
diff --git a/0001-Don-t-put-DESTDIR-in-the-isomd5sum.pc-file.patch b/0001-Don-t-put-DESTDIR-in-the-isomd5sum.pc-file.patch
deleted file mode 100644
index 550dcaf..0000000
--- a/0001-Don-t-put-DESTDIR-in-the-isomd5sum.pc-file.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From 8d80e470944bf10fff8645d0dd4a5860124f282d Mon Sep 17 00:00:00 2001
-From: "Brian C. Lane" <bcl@redhat.com>
-Date: Tue, 3 Oct 2017 12:13:31 -0700
-Subject: [PATCH] Don't put DESTDIR in the isomd5sum.pc file
-
----
- Makefile | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/Makefile b/Makefile
-index c8ea9b6..6edda1b 100644
---- a/Makefile
-+++ b/Makefile
-@@ -58,7 +58,7 @@ install-devel:
- 	install -m 0644 libcheckisomd5.h $(DESTDIR)/usr/include/
- 	install -m 0644 libimplantisomd5.a $(DESTDIR)/usr/$(LIBDIR)
- 	install -m 0644 libcheckisomd5.a $(DESTDIR)/usr/$(LIBDIR)
--	sed "s#@VERSION@#${VERSION}#g; s#@includedir@#${DESTDIR}/usr/include#g; s#@libdir@#${DESTDIR}/usr/${LIBDIR}#g" isomd5sum.pc.in > ${DESTDIR}/usr/share/pkgconfig/isomd5sum.pc
-+	sed "s#@VERSION@#${VERSION}#g; s#@includedir@#/usr/include#g; s#@libdir@#/usr/${LIBDIR}#g" isomd5sum.pc.in > ${DESTDIR}/usr/share/pkgconfig/isomd5sum.pc
- 
- clean:
- 	rm -f *.o *.so *.pyc *.a .depend *~
--- 
-2.13.5
-
diff --git a/isomd5sum.spec b/isomd5sum.spec
index 8a7d21c..de1efd5 100644
--- a/isomd5sum.spec
+++ b/isomd5sum.spec
@@ -1,7 +1,7 @@
 Summary: Utilities for working with md5sum implanted in ISO images
 Name:    isomd5sum
-Version: 1.2.2
-Release: 4%{?dist}
+Version: 1.2.3
+Release: 1%{?dist}
 Epoch: 1
 License: GPLv2+
 Group: Applications/System
@@ -9,8 +9,6 @@ Group: Applications/System
 Url:     https://github.com/rhinstaller/isomd5sum
 Source0: https://github.com/rhinstaller/%{name}/archive/%{version}.tar.gz
 
-Patch0: 0001-Don-t-put-DESTDIR-in-the-isomd5sum.pc-file.patch
-
 BuildRequires: gcc
 BuildRequires: popt-devel
 BuildRequires: python2-devel python3-devel
@@ -85,6 +83,11 @@ popd
 %{python3_sitearch}/pyisomd5sum.so
 
 %changelog
+* Tue Apr 10 2018 Brian C. Lane <bcl@redhat.com> - 1:1.2.3-1
+- New Version 1.2.3 (bcl)
+- Fix 32bit bug on large files (squimrel)
+- Don't put DESTDIR in the isomd5sum.pc file (bcl)
+
 * Fri Feb 23 2018 Florian Weimer <fweimer@redhat.com> - 1:1.2.2-4
 - Use LDFLAGS from redhat-rpm-config
 
diff --git a/sources b/sources
index 9051980..84f1e92 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (1.2.2.tar.gz) = a92305c996151f6e806327305918720eb584cf16cd5a1fa3ab8eec8d2594f351a69db7c8770359c561f49097e8c068608ce88e174bcb80449b3c5e79086fa860
+SHA512 (1.2.3.tar.gz) = a500faa368377c8fb5dfc311bc3a6dbadd253e6af7928b691d1fc11e25b69819a611f72fa201e70f5df257cdc491c97d1f612bb179fa49de1fb0a638d6ac7972