diff --git a/rpm-4.13.0-python-rpmsign.patch b/rpm-4.13.0-python-rpmsign.patch
new file mode 100644
index 0000000..3e535b6
--- /dev/null
+++ b/rpm-4.13.0-python-rpmsign.patch
@@ -0,0 +1,22 @@
+From eb632e5158fa4ef993b0e5df2a354f0be7a7a71d Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Nikola=20Forr=C3=B3?= <nforro@redhat.com>
+Date: Wed, 20 Apr 2016 15:39:36 +0200
+Subject: [PATCH] Use correct source file for rpmsign module
+
+---
+ python/setup.py.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/python/setup.py.in b/python/setup.py.in
+index b2c394136..f94873fe5 100644
+--- a/python/setup.py.in
++++ b/python/setup.py.in
+@@ -48,7 +48,7 @@ rpmbuild_mod = Extension('rpm._rpmb',
+                   )
+ 
+ rpmsign_mod = Extension('rpm._rpms',
+-                   sources = ['rpmbmodule.c'],
++                   sources = ['rpmsmodule.c'],
+                    include_dirs = pkgconfig('--cflags'),
+                    libraries = pkgconfig('--libs') + ['rpmsign'],
+                    extra_compile_args = cflags,
diff --git a/rpm.spec b/rpm.spec
index 5f6d07e..3368393 100644
--- a/rpm.spec
+++ b/rpm.spec
@@ -33,7 +33,7 @@
 Summary: The RPM package management system
 Name: rpm
 Version: %{rpmver}
-Release: %{?snapver:0.%{snapver}.}20%{?dist}
+Release: %{?snapver:0.%{snapver}.}21%{?dist}
 Group: System Environment/Base
 Url: http://www.rpm.org/
 Source0: http://ftp.rpm.org/releases/%{srcdir}/%{name}-%{srcver}.tar.bz2
@@ -56,6 +56,7 @@ Patch4: rpm-4.8.1-use-gpg2.patch
 Patch5: rpm-4.12.0-rpm2cpio-hack.patch
 
 # Patches already upstream:
+Patch100: rpm-4.13.0-python-rpmsign.patch
 
 Patch133: rpm-4.13.x-pythondistdeps.patch
 Patch134: rpm-4.13.x-pythondistdeps-Makefile.patch
@@ -609,6 +610,9 @@ exit 0
 %doc doc/librpm/html/*
 
 %changelog
+* Tue May 23 2017 Panu Matilainen <pmatilai@redhat.com> - 4.13.0.1-21
+- Fix rpmsign python module import failing (#1393659)
+
 * Tue Apr 25 2017 Mark Wielaard <mjw@fedoraproject.org> - 4.13.0.1-20
 - Fix rpmbuild world writable empty (tmp) dirs in debuginfo (#641022)