diff --git a/R-sciplot.spec b/R-sciplot.spec
index c9ea40d..d876767 100644
--- a/R-sciplot.spec
+++ b/R-sciplot.spec
@@ -4,7 +4,7 @@
 
 Name:             R-%{packname}
 Version:          %{packvers}.%{packrel}
-Release:          1%{?dist}
+Release:          2%{?dist}
 Summary:          Scientific Graphing Functions for Factorial Designs
 License:          GPLv2+
 URL:              http://cran.r-project.org/web/packages/sciplot/index.html
@@ -47,6 +47,9 @@ test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
 %{_datadir}/R/library/%{packname}/help
 
 %changelog
+* Fri Jun  5 2020 Tom Callaway <spot@fedoraproject.org> - 1.2.0-2
+- rebuild for R 4
+
 * Sun Mar 01 2020 josef radinger <cheese@nosuchhost.net> - 1.2.0-1
 - bump version