diff --git a/.gitignore b/.gitignore
index aca3ef8..0721bb6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,3 @@
 /xtensor-0.23.1.tar.gz
 /xtensor-0.24.2.tar.gz
 /xtensor-0.25.0.tar.gz
-/xtensor-0.27.0.tar.gz
-/xtensor-0.27.1.tar.gz
diff --git a/sources b/sources
index 2f4f959..0dd4631 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (xtensor-0.27.1.tar.gz) = 3f3fe2391df91518cfef4983ff66bf3b79940136582bb99c6270f87481bf9d2cc15605b13f9b70b6ee9a7a89b389037dd2b26362fcae0fdc49f5204872ee5291
+SHA512 (xtensor-0.25.0.tar.gz) = d8ff5bdb2af66db5ba84cceb2e5138728b7e689b81d5aab904c4f5dfbebdcde67b8ecf38e69750edb85e30a6f45ce70ff618ca3d1a76f38a2b4013a6a6320de6
diff --git a/xtensor.spec b/xtensor.spec
index d9bf989..70bc0ad 100644
--- a/xtensor.spec
+++ b/xtensor.spec
@@ -1,10 +1,10 @@
 %undefine __cmake_in_source_build
 
 Name:           xtensor
-Version:        0.27.1
+Version:        0.25.0
 Release:        %autorelease
 Summary:        C++ tensors with broadcasting and lazy computing
-License:        BSD-3-Clause
+License:        BSD
 URL:            http://xtensor.readthedocs.io/
 
 %global github  https://github.com/QuantStack/xtensor
@@ -17,7 +17,6 @@ BuildRequires:  xtl-devel
 BuildRequires:  xsimd-devel
 BuildRequires:  python3-numpy
 BuildRequires:  doctest-devel
-BuildRequires:  json-devel
 
 # there is no actual arched content - this is a header only library
 %global debug_package %{nil}
@@ -48,7 +47,7 @@ Requires:       xsimd-devel
 %autosetup -p1
 
 %ifarch s390x
-find -name '*.npy' -exec %{__python3} -c "import numpy as np; arr = np.load('{}').byteswap() ; np.save('{}', arr.view(arr.dtype.newbyteorder()))" \;
+find -name '*.npy' -exec %{__python3} -c "import numpy as np; np.save('{}', np.load('{}').byteswap().newbyteorder())" \;
 %endif
 
 %build
@@ -57,8 +56,6 @@ find -name '*.npy' -exec %{__python3} -c "import numpy as np; arr = np.load('{}'
 
 %install
 %cmake_install
-rm %{buildroot}%{_prefix}/etc/xeus-cpp/tags.d/xtensor.json
-rm %{buildroot}%{_datadir}/xeus-cpp/tagfiles/xtensor.tag
 
 %check
 %cmake_build --target xtest
@@ -68,8 +65,8 @@ rm %{buildroot}%{_datadir}/xeus-cpp/tagfiles/xtensor.tag
 %license LICENSE
 %{_includedir}/%{name}.hpp
 %{_includedir}/%{name}/
-%{_datadir}/cmake/%{name}/
-%{_datadir}/pkgconfig/%{name}.pc
+%{_libdir}/cmake/%{name}/
+%{_libdir}/pkgconfig/%{name}.pc
 
 %changelog
 %autochangelog