diff --git a/.gitignore b/.gitignore
index c755cb4..970128b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /Botan-1.8.12.stripped.tbz
 /Botan-1.8.13.stripped.tbz
 /Botan-1.8.14.stripped.tbz
+/Botan-1.8.15.stripped.tar.gz
diff --git a/botan-1.8.14-fix_prime_testing.patch b/botan-1.8.14-fix_prime_testing.patch
deleted file mode 100644
index 5698c6a..0000000
--- a/botan-1.8.14-fix_prime_testing.patch
+++ /dev/null
@@ -1,14 +0,0 @@
-============================================================
---- src/math/numbertheory/numthry.cpp   e810b1dace1f2f07c3fceabddb59844a8807d58f
-+++ src/math/numbertheory/numthry.cpp   03df310d0075893ff7b86ca57867fa0f0293c22e
-@@ -285,9 +285,9 @@ bool passes_mr_tests(RandomNumberGenerat
- 
-    u32bit tests = miller_rabin_test_iterations(n.bits(), verify);
- 
--   BigInt nonce;
-    for(u32bit i = 0; i != tests; ++i)
-       {
-+      BigInt nonce;
-       if(!verify && PRIMES[i] < (n-1))
-          nonce = PRIMES[i];
-       else
diff --git a/botan-1.8.14-soname.patch b/botan-1.8.14-soname.patch
deleted file mode 100644
index 6976728..0000000
--- a/botan-1.8.14-soname.patch
+++ /dev/null
@@ -1,19 +0,0 @@
-#
-# old_revision [adcf24b7e258c125f78aaff4ef2d3557f1183c3e]
-#
-# patch "configure.py"
-#  from [b43917e0e74e7ef1ff0024542da0dabe104a1582]
-#    to [ba82e657a585f31e9ba20056a57c5f597c0f0297]
-#
-============================================================
---- configure.py	b43917e0e74e7ef1ff0024542da0dabe104a1582
-+++ configure.py	ba82e657a585f31e9ba20056a57c5f597c0f0297
-@@ -38,7 +38,7 @@ class BuildConfigurationInformation(obje
-     version_major = 1
-     version_minor = 8
-     version_patch = 14
--    version_so_patch = 13
-+    version_so_patch = 2
-     version_suffix = ''
- 
-     version_string = '%d.%d.%d%s' % (
diff --git a/botan-1.8.15-soname.patch b/botan-1.8.15-soname.patch
new file mode 100644
index 0000000..92621f0
--- /dev/null
+++ b/botan-1.8.15-soname.patch
@@ -0,0 +1,12 @@
+diff -up Botan-1.8.15/configure.py.orig Botan-1.8.15/configure.py
+--- Botan-1.8.15/configure.py.orig	2016-02-13 17:52:52.000000000 +0100
++++ Botan-1.8.15/configure.py	2016-02-13 19:42:13.768986406 +0100
+@@ -38,7 +38,7 @@ class BuildConfigurationInformation(obje
+     version_major = 1
+     version_minor = 8
+     version_patch = 15
+-    version_so_patch = 13
++    version_so_patch = 2
+     version_suffix = ''
+ 
+     version_string = '%d.%d.%d%s' % (
diff --git a/botan.spec b/botan.spec
index 5a051b4..6f43c6c 100644
--- a/botan.spec
+++ b/botan.spec
@@ -1,20 +1,17 @@
 Name:           botan
-Version:        1.8.14
-Release:        2%{?dist}
+Version:        1.8.15
+Release:        1%{?dist}
 Summary:        Crypto library written in C++
 
 Group:          System Environment/Libraries
 License:        BSD
 URL:            http://botan.randombit.net/
 # tarfile is stripped using repack.sh. original tarfile to be found
-# here: http://files.randombit.net/botan/Botan-%%{version}.tbz
-Source0:        Botan-%{version}.stripped.tbz
+# here: http://botan.randombit.net/releases/Botan-%%{version}.tgz
+Source0:        Botan-%{version}.stripped.tar.gz
 Source1:        README.fedora
 # soname was changed unintentionally upstream, revert it.
-Patch0:         botan-1.8.14-soname.patch
-# patch to fix prime testing, see also
-# http://botan.randombit.net/relnotes/1_10_8.html
-Patch1:         botan-1.8.14-fix_prime_testing.patch
+Patch0:         botan-1.8.15-soname.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  gcc-c++
@@ -53,8 +50,7 @@ developing applications that use %{name}.
 
 %prep
 %setup -q -n Botan-%{version}
-%patch0 -p0
-%patch1 -p0
+%patch0 -p1
 cp -av %{SOURCE1} .
 
 %build
@@ -97,7 +93,6 @@ rm -rf %{buildroot}
 
 
 %files
-%defattr(-,root,root,-)
 %{_libdir}/libbotan*-*.so
 %doc _doc/readme.txt _doc/log.txt _doc/thanks.txt _doc/credits.txt 
 %doc _doc/license.txt _doc/fips140.tex _doc/pgpkeys.asc
@@ -105,7 +100,6 @@ rm -rf %{buildroot}
 
 
 %files devel
-%defattr(-,root,root,-)
 %doc doc/examples
 %doc _doc/api* _doc/tutorial*
 %{_bindir}/botan-config
@@ -126,6 +120,11 @@ LD_LIBRARY_PATH=%{buildroot}%{_libdir} ./check --validate
 
 
 %changelog
+* Sat Feb 13 2016 Thomas Moschny <thomas.moschny@gmx.de> - 1.8.15-1
+- Update to 1.8.15.
+- Remove patch applied upstream.
+- Remove %%defattr directives.
+
 * Sat May 10 2014 Thomas Moschny <thomas.moschny@gmx.de> - 1.8.14-2
 - Add patch to fix prime testing.
 
diff --git a/repack.sh b/repack.sh
index 9bd4162..475c8b7 100755
--- a/repack.sh
+++ b/repack.sh
@@ -1,23 +1,23 @@
 #! /bin/bash
 
-version=1.8.14
-name=Botan-${version}
-suffix=.tbz
-newsuffix=.stripped.tbz
-compr=bzip2
+name=Botan-1.8.15
+src=${name}.tgz
+dst=${name}.stripped.tar.gz
 
-trap '${tmpfile:+rm ${tmpfile}}' EXIT
-tmpfile=$(mktemp)
+rm -f ${dst} ${dst%.gz}
+cp -av ${src} ${dst}
 
-${compr} -cd ${name}${suffix} > ${tmpfile}
+gzip -d ${dst}
 
-tar --delete --file=${tmpfile} ./Botan-${version}/src/block/idea
-tar --delete --file=${tmpfile} ./Botan-${version}/src/block/rc6
-tar --delete --file=${tmpfile} ./Botan-${version}/src/block/rc5
-tar --delete --file=${tmpfile} ./Botan-${version}/src/math/gfpmath
-tar --delete --file=${tmpfile} ./Botan-${version}/src/pubkey/ec_dompar
-tar --delete --file=${tmpfile} ./Botan-${version}/src/pubkey/ecc_key
-tar --delete --file=${tmpfile} ./Botan-${version}/src/pubkey/ecdsa
-tar --delete --file=${tmpfile} ./Botan-${version}/src/pubkey/eckaeg
+tar --delete --file=${dst%.gz} \
+    ${name}/src/block/idea \
+    ${name}/src/block/rc6 \
+    ${name}/src/block/rc5 \
+    ${name}/src/math/gfpmath \
+    ${name}/src/pubkey/ec_dompar \
+    ${name}/src/pubkey/ecc_key \
+    ${name}/src/pubkey/ecdsa \
+    ${name}/src/pubkey/eckaeg
+touch -m -r ${src} ${dst%.gz}
 
-${compr} -c ${tmpfile} > ${name}${newsuffix}
+gzip ${dst%.gz}
diff --git a/sources b/sources
index 219b46d..cdf2878 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-4b5ce78b1cfc0735eb7ec4f6903068ca  Botan-1.8.14.stripped.tbz
+9206a5cb467cd9c8f81be72a52a2d4f8  Botan-1.8.15.stripped.tar.gz