diff --git a/python-numpy.changes b/python-numpy.changes
index 5294af7..d033b90 100644
--- a/python-numpy.changes
+++ b/python-numpy.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Fri Oct  2 13:29:32 UTC 2020 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Add cblas build dependency, otherwise numpy uses naive internal
+  implementations for some blas operations, mitigates boo#1177260.
+- Add libopenblas recommends. To actually use openblas instead of
+  netlib BLAS/LAPACK, update-alternatives has to be used.
+- Remove .pytest_cache from the build_root
+
 -------------------------------------------------------------------
 Wed Sep 30 07:13:22 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>
 
diff --git a/python-numpy.spec b/python-numpy.spec
index a63a6bf..5c8c8b0 100644
--- a/python-numpy.spec
+++ b/python-numpy.spec
@@ -101,7 +101,10 @@ BuildRequires:  gcc-gfortran
 BuildRequires:  openblas-devel > 0.3.4
  %else
 BuildRequires:  blas-devel
+BuildRequires:  cblas-devel
 BuildRequires:  lapack-devel
+# openblas has significantly better performance for some operations
+Recommends:     libopenblas_pthreads0
  %endif
 # Last version which packaged %%{_bindir}/f2py without update-alternatives
 # Protect it from substitution
@@ -141,6 +144,7 @@ Requires:       python-devel
 Requires:       openblas-devel
 %else
 Requires:       blas-devel
+Requires:       cblas-devel
 Requires:       lapack-devel
 %endif
 %else
@@ -253,10 +257,13 @@ pushd testing
 # boo#1148173 gh#numpy/numpy#14438
 %ifarch ppc64 ppc64le
 %define skiptest -k "not test_generalized_sq"
+%pytest_arch -n auto --pyargs numpy %{buildroot}%{python_sitearch}/numpy -k "test_generalized_sq" || true
 %endif
 %pytest_arch -n auto --pyargs numpy %{buildroot}%{python_sitearch}/numpy %{?skiptest}
 popd
+rm -Rf %{buildroot}%{python_sitearch}/numpy/.pytest_cache
 %endif
+
 %if %{without hpc}
 %post
 %python_install_alternative f2py