diff --git a/opensc.changes b/opensc.changes
index 54a9032..6fa121e 100644
--- a/opensc.changes
+++ b/opensc.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jul 23 21:51:42 UTC 2019 - Benjamin Greiner <code@bnavigator.de>
+
+- add explicit BuildRequires: zlib-devel 
+
 -------------------------------------------------------------------
 Thu Sep 13 13:46:43 UTC 2018 - Karol Babioch <kbabioch@suse.com>
 
diff --git a/opensc.spec b/opensc.spec
index d729888..46da967 100644
--- a/opensc.spec
+++ b/opensc.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package opensc
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -12,7 +12,7 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
 
@@ -35,6 +35,7 @@ BuildRequires:  libtool
 BuildRequires:  libxslt
 BuildRequires:  pkgconfig
 BuildRequires:  readline-devel
+BuildRequires:  zlib-devel
 BuildRequires:  pkgconfig(bash-completion)
 BuildRequires:  pkgconfig(libpcsclite)
 BuildRequires:  pkgconfig(openssl)