diff --git a/arpack.spec b/arpack.spec
index a2f2438..4acbc79 100644
--- a/arpack.spec
+++ b/arpack.spec
@@ -1,19 +1,7 @@
 %global build64 0
-%if 0%{?fedora} >= 26 || 0%{?rhel} >= 7
-%{!?openblas_arches:%global openblas_arches x86_64 %{ix86} armv7hl %{power64} aarch64}
-%ifnarch %{openblas_arches}
-# matches openblas ExclusiveArch
-%bcond_without atlas
-%else
 %if 0%{?__isa_bits} == 64
 %global build64 1
 %endif
-%endif
-%endif
-
-%if 0%{?fedora} >= 33
-%bcond_without flexiblas
-%endif
 
 # We are linking FORTRAN symbols.  Thus we cannot link --as-needed.
 %undefine _ld_as_needed
@@ -31,15 +19,7 @@ Patch0:         arpack-install-arpackicb_h.patch
 
 BuildRequires:	gcc-c++
 BuildRequires:	gcc-gfortran
-%if %{with flexiblas}
 BuildRequires:  pkgconfig(flexiblas)
-%else
-%if %{with atlas}
-BuildRequires:	atlas-devel
-%else
-BuildRequires:	openblas-devel
-%endif
-%endif
 BuildRequires:	libtool >= 2.4.2
 BuildRequires: make
 Provides:	arpack-ng = %{version}-%{release}
@@ -103,19 +83,7 @@ cp -pr src src64
 
 
 %build
-%if %{with flexiblas}
 %global blaslib -lflexiblas
-%else
-%if %{with atlas}
-%if 0%{?fedora} || 0%{?rhel} >= 7
-%global blaslib -L%{_libdir}/atlas -ltatlas
-%else
-%global blaslib -L%{_libdir}/atlas -lf77blas -latlas
-%endif
-%else
-%global blaslib -lopenblasp
-%endif
-%endif
 pushd src
 %configure --enable-shared --enable-static \
     --with-blas="%{blaslib}" \
@@ -197,6 +165,7 @@ popd
 %changelog
 * Thu Sep 02 2021 Dominik Mierzejewski <rpm@greysector.net> - 3.8.0-2
 - ensure arpackicb.h is installed (#1990366)
+- spec clean-up: drop support for building with other blas libs on F34+
 
 * Wed Jun 02 2021 Dominik Mierzejewski <rpm@greysector.net> - 3.8.0-1
 - update to 3.8.0 (#1905263)