diff --git a/clzip-1.10.tar.gz b/clzip-1.10.tar.gz
deleted file mode 100644
index c5d4110..0000000
--- a/clzip-1.10.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e33506b4654b87ff1d5f02ce3db23363dd1a674c00625d799644f93628acac0f
-size 105976
diff --git a/clzip-1.10.tar.gz.sig b/clzip-1.10.tar.gz.sig
deleted file mode 100644
index 32dae1d..0000000
Binary files a/clzip-1.10.tar.gz.sig and /dev/null differ
diff --git a/clzip-1.11-rc1.tar.gz b/clzip-1.11-rc1.tar.gz
new file mode 100644
index 0000000..f7fabeb
--- /dev/null
+++ b/clzip-1.11-rc1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f861d1472bb65f4c6edad2374370925da47eaff1b7ab760a7cdd8d065bcbf987
+size 107447
diff --git a/clzip.changes b/clzip.changes
index 22c7e34..5a11c73 100644
--- a/clzip.changes
+++ b/clzip.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Dec 14 11:49:06 UTC 2018 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to new upstream release 1.11~rc1
+  * Detection of forbidden combinations of characters in trailing
+    data has been improved.
+
 -------------------------------------------------------------------
 Mon Mar  5 19:31:54 UTC 2018 - jengelh@inai.de
 
diff --git a/clzip.spec b/clzip.spec
index 966ecfa..971bc56 100644
--- a/clzip.spec
+++ b/clzip.spec
@@ -13,20 +13,20 @@
 # 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:           clzip
-Version:        1.10
+Version:        1.11~rc1
 Release:        0
+%define xversion	1.11-rc1
 Summary:        Lossless Data Compressor based on LZMA
 License:        GPL-2.0-or-later
 Group:          Productivity/Archiving/Compression
-Url:            http://www.nongnu.org/lzip/clzip.html
-
-Source:         http://download.savannah.gnu.org/releases/lzip/clzip/%name-%version.tar.gz
-Source2:        http://download.savannah.gnu.org/releases/lzip/clzip/%name-%version.tar.gz.sig
+URL:            http://www.nongnu.org/lzip/clzip.html
+Source:         http://download.savannah.gnu.org/releases/lzip/clzip/%name-%xversion.tar.gz
+#Source2:        http://download.savannah.gnu.org/releases/lzip/clzip/%name-%version.tar.gz.sig
 Source3:        %name.keyring
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Requires(post): info
@@ -43,20 +43,27 @@ Clzip is, in fact, a C language implementation of lzip, intended for
 embedded devices or systems lacking a C++ compiler.
 
 %prep
-%setup -q
+%autosetup -n %name-%xversion
 
 %build
 # not autoconf
-./configure --srcdir=. --prefix="%_prefix" --bindir="%_bindir" \
-	--datadir="%_datadir" --infodir="%_infodir" --mandir="%_mandir" \
-	--sysconfdir="%_sysconfdir" CC="gcc" CFLAGS="%optflags"
+mkdir build
+pushd build/
+../configure --prefix="%_prefix" --bindir="%_bindir" --datadir="%_datadir" \
+	--infodir="%_infodir" --mandir="%_mandir" --sysconfdir="%_sysconfdir" \
+	CC="%__cc" CFLAGS="%optflags"
 make %{?_smp_flags}
+popd
 
 %install
+pushd build/
 %make_install
+popd
 
 %check
+pushd build/
 make check
+popd
 
 %post
 %install_info --info-dir="%_infodir" "%_infodir/clzip.info%ext_info"
@@ -68,7 +75,7 @@ make check
 %defattr(-,root,root)
 %doc AUTHORS COPYING ChangeLog NEWS README
 %_bindir/clzip
-%doc %_mandir/man1/clzip.1%ext_man
-%doc %_infodir/clzip.info%ext_info
+%_mandir/man1/clzip.1%ext_man
+%_infodir/clzip.info%ext_info
 
 %changelog