diff --git a/gr-air-modes.spec b/gr-air-modes.spec
index 8df0c28..44e344a 100644
--- a/gr-air-modes.spec
+++ b/gr-air-modes.spec
@@ -8,13 +8,12 @@
 Name:             gr-air-modes
 URL:              http://github.com/bistromath/gr-air-modes
 Version:          0
-Release:          0.76.%{git_suffix}%{?dist}
+Release:          0.77.%{git_suffix}%{?dist}
 License:          GPLv3+
 BuildRequires:    cmake, gcc-c++, python3-devel, python3-numpy, python3-scipy, gnuradio-devel
 BuildRequires:    sqlite-devel, uhd-devel, boost-devel, doxygen, graphviz
 BuildRequires:    swig, python3-zmq, log4cpp-devel, gmp-devel
-# TODO: fix this, package not available on ppc64
-#BuildRequires:    mpir-devel
+BuildRequires:    mpir-devel
 BuildRequires:    orc-devel, python3-pyqtgraph
 # TODO: check whether qwt is needed
 BuildRequires:    qwt5-qt4-devel
@@ -83,6 +82,10 @@ popd
 %doc %{_docdir}/%{name}/xml
 
 %changelog
+* Sun Dec 20 2020 Benjamin A. Beasley <code@musicinmybrain.net> - 0-0.77.20200807git9e2515a5
+- BR MPIR, now available on all architectures (using a generic build without
+  optimized assembly routines on ppc64le)
+
 * Mon Aug 24 2020 Jaroslav Škarvada <jskarvad@redhat.com> - 0-0.76.20200807git9e2515a5
 - Rebuilt for new gnuradio