diff --git a/python-zstandard.spec b/python-zstandard.spec
index d4125ad..deedc5d 100644
--- a/python-zstandard.spec
+++ b/python-zstandard.spec
@@ -14,12 +14,13 @@ compression library. A C extension and CFFI interface are provided.
 
 Name: python-%{pypi_name}
 Version: 0.15.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Zstandard bindings for Python
 License: BSD and GPLv2
 URL: https://github.com/indygreg/python-zstandard
 Source0: %{pypi_source}
 Patch0: %{name}-fix-estimated_compression_context_size-tolerance-i686.patch
+Patch1: %{name}-issue-105.patch
 
 %description
 %{desc}
@@ -44,6 +45,7 @@ Provides: bundled(zstd) = 1.4.8
 %prep
 %setup -q -n %{pypi_name}-%{version}
 %patch0 -p1
+%patch1 -p1
 rm -r %{pypi_name}.egg-info
 
 %build
@@ -57,22 +59,6 @@ rm -r %{pypi_name}.egg-info
 mv zstandard{,.src}
 export ZSTD_SLOW_TESTS=1
 %pytest -v\
-%ifarch s390x
-        -k "not test_constant_methods\
-        and not test_no_context_manager\
-        and not test_read_closed\
-        and not test_close\
-        and not test_read_after_exit\
-        and not test_read_buffer\
-        and not test_read_stream\
-        and not test_read_binary_filename\
-        and not test_read_binary_fileobj\
-        and not test_read_text_filename\
-        and not test_read_text_fileobj\
-        and not test_write_binary_filename\
-        and not test_write_binary_fileobj\
-        and not test_write_text_filename"\
-%endif
         --numprocesses=auto
 mv zstandard{.src,}
 %endif
@@ -84,6 +70,9 @@ mv zstandard{.src,}
 %{python3_sitearch}/%{pypi_name}
 
 %changelog
+* Mon Mar 01 2021 Dominik Mierzejewski <dominik@greysector.net> 0.15.1-2
+- fix tests on s390x
+
 * Wed Feb 03 2021 Dominik Mierzejewski <dominik@greysector.net> 0.15.1-1
 - update to 0.15.1 (#1924620)
 - work around weird test failure