diff --git a/innoextract.changes b/innoextract.changes
index ab96411..6a945ea 100644
--- a/innoextract.changes
+++ b/innoextract.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Aug 24 07:36:10 UTC 2018 - mpluskal@suse.com
+
+- Be more explicit about requirements
+
 -------------------------------------------------------------------
 Thu Aug 23 16:18:33 UTC 2018 - mardnh@gmx.de
 
diff --git a/innoextract.spec b/innoextract.spec
index 93ef66b..3d4ebba 100644
--- a/innoextract.spec
+++ b/innoextract.spec
@@ -13,7 +13,7 @@
 # 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/
 #
 
 
@@ -34,8 +34,10 @@ BuildRequires:  libboost_filesystem-devel
 BuildRequires:  libboost_iostreams-devel
 BuildRequires:  libboost_program_options-devel
 BuildRequires:  pkgconfig
-BuildRequires:  python-devel
+BuildRequires:  python3-base
+BuildRequires:  pkgconfig(bzip2)
 BuildRequires:  pkgconfig(liblzma)
+BuildRequires:  pkgconfig(zlib)
 
 %description
 Inno Setup is a tool to create installers for Microsoft Windows