diff --git a/potrace-1.14.tar.gz b/potrace-1.14.tar.gz
deleted file mode 100644
index 01b6ced..0000000
--- a/potrace-1.14.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:db72b65311cfdcb63880b317f610d84485f086e15f88ca2346012d49414cd97e
-size 649685
diff --git a/potrace-1.15.tar.gz b/potrace-1.15.tar.gz
new file mode 100644
index 0000000..5588c1f
--- /dev/null
+++ b/potrace-1.15.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a9b33904ace328340c850a01458199e0064e03ccaaa731bc869a842b1b8d529d
+size 650840
diff --git a/potrace.changes b/potrace.changes
index f10050c..96c6f6e 100644
--- a/potrace.changes
+++ b/potrace.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Mon Aug  7 17:28:41 CEST 2017 - sbrabec@suse.com
+
+- Update to version 1.15:
+  * Fix potential buffer overflows and arithmetic overflows
+    (bsc#1051634, CVE-2017-12067).
+  * Fix bug triggered by very large bitmaps.
+  * Other bugfixes.
+- Build position independent binaries.
+- Process with spec-cleaner.
+- Work around failure of -fstack-protector on s390x.
+
 -------------------------------------------------------------------
 Tue Feb 28 14:18:04 CET 2017 - sbrabec@suse.com
 
diff --git a/potrace.spec b/potrace.spec
index 1266c2a..d53e681 100644
--- a/potrace.spec
+++ b/potrace.spec
@@ -17,7 +17,7 @@
 
 
 Name:           potrace
-Version:        1.14
+Version:        1.15
 Release:        0
 Summary:        Utility for Tracing a Bitmap to Scalable Outline Image
 License:        GPL-2.0+
@@ -25,12 +25,11 @@ Group:          Productivity/Graphics/Convertors
 Url:            http://potrace.sourceforge.net/
 Source:         http://potrace.sourceforge.net/download/%{version}/%{name}-%{version}.tar.gz
 BuildRequires:  zlib-devel
+Provides:       bitmap_tracing
 %ifnarch ppc s390
 # gcc is supported as well, but clang is preferred by the upstream.
 BuildRequires:  clang
 %endif
-Provides:       bitmap_tracing
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
 %description
 Potrace is a utility for tracing a bitmap, which means, transforming a
@@ -72,40 +71,41 @@ at any resolution.
 %setup -q
 
 %build
+%define warn_flags -Wall -Wstrict-prototypes -Wpointer-arith -Wformat-security
+export CFLAGS="%{optflags} %{warn_flags} -fPIE"
+export LDFLAGS="-pie"
+%ifarch s390x
+# clang on s390x does not support -fstack-protector from the default optflags
+# (undefined reference to `__stack_chk_guard')
+export CFLAGS="${CFLAGS/-fstack-protector /}"
+%endif
 %configure\
 	--docdir=%{_docdir}/%{name}\
 	--with-libpotrace\
 	--disable-static
-make  %{?_smp_mflags}
+make %{?_smp_mflags}
 
 %install
-%if %suse_version > 1110
+%if 0%{?suse_version} > 1110
 %make_install
 %else
-%makeinstall
+%make_install
 %endif
 cp -a AUTHORS ChangeLog COPYING NEWS README %{buildroot}%{_docdir}/%{name}/
 rm %{buildroot}%{_libdir}/*.*a
 
-%clean
-rm -rf %{buildroot}
-
 %post -n libpotrace0 -p /sbin/ldconfig
-
 %postun -n libpotrace0 -p /sbin/ldconfig
 
 %files
-%defattr(-,root,root)
 %{_bindir}/*
 %doc %{_docdir}/%{name}
-%doc %{_mandir}/man?/*.*
+%{_mandir}/man?/*%{ext_man}
 
 %files -n libpotrace0
-%defattr(-,root,root)
 %{_libdir}/*.so.*
 
 %files devel
-%defattr(-,root,root)
 %{_includedir}/*.h
 %{_libdir}/*.so