diff --git a/bison-3.4.2.tar.xz b/bison-3.4.2.tar.xz
deleted file mode 100644
index a459dc1..0000000
--- a/bison-3.4.2.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:27d05534699735dc69e86add5b808d6cb35900ad3fd63fa82e3eb644336abfa0
-size 2240532
diff --git a/bison-3.4.2.tar.xz.sig b/bison-3.4.2.tar.xz.sig
deleted file mode 100644
index c53e52f..0000000
--- a/bison-3.4.2.tar.xz.sig
+++ /dev/null
@@ -1,6 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
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-=IIGs
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diff --git a/bison-3.5.tar.xz b/bison-3.5.tar.xz
new file mode 100644
index 0000000..337ef45
--- /dev/null
+++ b/bison-3.5.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:55e4a023b1b4ad19095a5f8279f0dc048fa29f970759cea83224a6d5e7a3a641
+size 2341024
diff --git a/bison-3.5.tar.xz.sig b/bison-3.5.tar.xz.sig
new file mode 100644
index 0000000..c00bb07
--- /dev/null
+++ b/bison-3.5.tar.xz.sig
@@ -0,0 +1,6 @@
+-----BEGIN PGP SIGNATURE-----
+
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+=5Dmw
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diff --git a/bison.changes b/bison.changes
index f0f93a9..9d62cb1 100644
--- a/bison.changes
+++ b/bison.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Tue Dec 17 03:01:16 UTC 2019 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Drop unnecessary autoconf BuildRequires. 
+
+-------------------------------------------------------------------
+Mon Dec 16 15:40:38 UTC 2019 - Martin Pluskal <mpluskal@suse.com>
+
+- Update to version 3.5:
+  * Plenty of changes - see provided NEWS for detailed list
+
 -------------------------------------------------------------------
 Sun Sep 22 15:25:35 UTC 2019 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/bison.spec b/bison.spec
index c652125..8425d42 100644
--- a/bison.spec
+++ b/bison.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package bison
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2019 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -17,24 +17,21 @@
 
 
 Name:           bison
-Version:        3.4.2
+Version:        3.5
 Release:        0
 Summary:        The GNU Parser Generator
 License:        GPL-3.0-or-later
 Group:          Development/Languages/C and C++
-URL:            http://www.gnu.org/software/bison/bison.html
+URL:            https://www.gnu.org/software/bison/bison.html
 Source0:        ftp://ftp.gnu.org/gnu/bison/bison-%{version}.tar.xz
 Source1:        ftp://ftp.gnu.org/gnu/bison/bison-%{version}.tar.xz.sig
 Source2:        %{name}.keyring
 Source3:        baselibs.conf
-BuildRequires:  autoconf
 BuildRequires:  flex
 BuildRequires:  gcc-c++
-BuildRequires:  xz
 Requires:       m4
 Requires(post): %{install_info_prereq}
 Requires(preun): %{install_info_prereq}
-Recommends:     %{name}-lang
 
 %description
 Bison is a parser generator similar to yacc(1).
@@ -42,7 +39,7 @@ Bison is a parser generator similar to yacc(1).
 %lang_package
 
 %prep
-%setup -q
+%autosetup
 
 %build
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objects