diff --git a/bison-3.0.5.tar.xz b/bison-3.0.5.tar.xz
deleted file mode 100644
index 47e3738..0000000
--- a/bison-3.0.5.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:075cef2e814642e30e10e8155e93022e4a91ca38a65aa1d5467d4e969f97f338
-size 1954868
diff --git a/bison-3.0.5.tar.xz.sig b/bison-3.0.5.tar.xz.sig
deleted file mode 100644
index 611a84b..0000000
--- a/bison-3.0.5.tar.xz.sig
+++ /dev/null
@@ -1,6 +0,0 @@
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diff --git a/bison-3.1.tar.xz b/bison-3.1.tar.xz
new file mode 100644
index 0000000..ebc0b45
--- /dev/null
+++ b/bison-3.1.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c2464ad6cb7b513b2c350a092d919327e1f63d12ff024836acbb504475da5c6
+size 1990536
diff --git a/bison-3.1.tar.xz.sig b/bison-3.1.tar.xz.sig
new file mode 100644
index 0000000..3502413
--- /dev/null
+++ b/bison-3.1.tar.xz.sig
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diff --git a/bison.changes b/bison.changes
index ecb4ebf..8e938f7 100644
--- a/bison.changes
+++ b/bison.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Tue Oct 2 05:28:01 UTC 2018 - sean@suspend.net
+
+- bison 3.1:
+  * Compiling Bison now requires a C99 compiler
+  * Typed midrule actions
+  * Reports include the type of symbols
+  * Diagnostics about useless rules now implemented
+  * C++: Generated parsers can be compiled with -fno-exceptions (lairi.cc)
+  * GLR: Predicates support broken by #line directives
+  * Printer and destructor with broken #line directives
+  * Portability on ICC
+
 -------------------------------------------------------------------
 Fri Jun 15 19:11:25 UTC 2018 - astieger@suse.com
 
diff --git a/bison.spec b/bison.spec
index 832a1b8..1bc29b9 100644
--- a/bison.spec
+++ b/bison.spec
@@ -12,19 +12,19 @@
 # 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/
 #
 
 
 Name:           bison
-Version:        3.0.5
+Version:        3.1
 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
-Source0:        http://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
-Source1:        http://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz.sig
+Source0:        ftp://ftp.gnu.org/gnu/bison/bison-3.1.tar.xz
+Source1:        ftp://ftp.gnu.org/gnu/bison/bison-3.1.tar.xz.sig
 Source2:        %{name}.keyring
 Source3:        baselibs.conf
 BuildRequires:  autoconf