diff --git a/gperf-3.0.4.tar.gz b/gperf-3.0.4.tar.gz
deleted file mode 100644
index 571f3ab..0000000
--- a/gperf-3.0.4.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:767112a204407e62dbc3106647cf839ed544f3cf5d0f0523aaa2508623aad63e
-size 983500
diff --git a/gperf-3.0.4.tar.gz.sig b/gperf-3.0.4.tar.gz.sig
deleted file mode 100644
index 7eb27c3..0000000
Binary files a/gperf-3.0.4.tar.gz.sig and /dev/null differ
diff --git a/gperf-3.1.tar.gz b/gperf-3.1.tar.gz
new file mode 100644
index 0000000..2a19d7f
--- /dev/null
+++ b/gperf-3.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:588546b945bba4b70b6a3a616e80b4ab466e3f33024a352fc2198112cdbb3ae2
+size 1215925
diff --git a/gperf-3.1.tar.gz.sig b/gperf-3.1.tar.gz.sig
new file mode 100644
index 0000000..0a56b27
Binary files /dev/null and b/gperf-3.1.tar.gz.sig differ
diff --git a/gperf.changes b/gperf.changes
index ae7bbb5..76bfa84 100644
--- a/gperf.changes
+++ b/gperf.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Thu Jan  5 15:07:45 UTC 2017 - mpluskal@suse.com
+
+- Update to version 3.1:
+  * The generated C code is now in ANSI-C by default.
+  * The 'len' parameter of the hash function and of the lookup
+    function is now of type 'size_t' instead of 'unsigned int'.
+  * Added option --constants-prefix.
+  * Added declaration %define constants-prefix.
+- Some packaging changes:
+  * https urls for downloads
+  * keyring is now fetched from savannah
+
 -------------------------------------------------------------------
 Thu Apr  2 15:38:25 UTC 2015 - mpluskal@suse.com
 
diff --git a/gperf.keyring b/gperf.keyring
index 3caeebd..1ee141b 100644
Binary files a/gperf.keyring and b/gperf.keyring differ
diff --git a/gperf.spec b/gperf.spec
index 3c7bd89..1255363 100644
--- a/gperf.spec
+++ b/gperf.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package gperf
 #
-# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2017 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
@@ -17,19 +17,18 @@
 
 
 Name:           gperf
-Version:        3.0.4
+Version:        3.1
 Release:        0
 Summary:        A Compiler Tool for Generating Perfect Hash Functions
 License:        GPL-3.0+
 Group:          Development/Languages/C and C++
 Url:            https://gnu.org/software/gperf/
-Source0:        ftp://ftp.gnu.org/pub/gnu/gperf/gperf-%{version}.tar.gz
-Source1:        ftp://ftp.gnu.org/pub/gnu/gperf/gperf-%{version}.tar.gz.sig
-Source2:        %{name}.keyring
+Source0:        https://ftp.gnu.org/pub/gnu/gperf/gperf-%{version}.tar.gz
+Source1:        https://ftp.gnu.org/pub/gnu/gperf/gperf-%{version}.tar.gz.sig
+Source2:        https://savannah.gnu.org/project/memberlist-gpgkeys.php?group=%{name}&download=1#/%{name}.keyring
 BuildRequires:  gcc-c++
 Requires(post): %{install_info_prereq}
 Requires(preun): %{install_info_prereq}
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
 A perfect hash function is simply: a hash function and a data structure
@@ -45,7 +44,7 @@ one probe into the data structure.
 make %{?_smp_mflags}
 
 %check
-make check
+make %{?_smp_mflags} check
 
 %install
 %make_install
@@ -53,16 +52,16 @@ rm -f %{buildroot}%{_prefix}/doc/gperf/gperf.html
 rm -f %{buildroot}%{_datadir}/doc/gperf/gperf.html
 
 %post
-%install_info --info-dir=%{_infodir} %{_infodir}/%{name}.info.gz
+%install_info --info-dir=%{_infodir} %{_infodir}/%{name}.info%{ext_info}
 
 %preun
-%install_info_delete --info-dir=%{_infodir} %{_infodir}/%{name}.info.gz
+%install_info_delete --info-dir=%{_infodir} %{_infodir}/%{name}.info%{ext_info}
 
 %files
 %defattr (-,root,root)
 %doc README NEWS AUTHORS COPYING ChangeLog doc/*.html
 %{_bindir}/gperf
-%doc %{_infodir}/gperf.info.gz
-%doc %{_mandir}/man1/gperf.1.gz
+%{_infodir}/gperf.info%{ext_info}
+%{_mandir}/man1/gperf.1%{ext_man}
 
 %changelog