diff --git a/R-iterators.spec b/R-iterators.spec
index 27ac54f..c92dcaa 100644
--- a/R-iterators.spec
+++ b/R-iterators.spec
@@ -1,9 +1,11 @@
+%bcond_with check
+
 %global packname  iterators
 %global rlibdir  %{_datadir}/R/library
 
 Name:             R-%{packname}
 Version:          1.0.12
-Release:          2%{?dist}
+Release:          3%{?dist}
 Summary:          Provides Iterator Construct
 
 License:          ASL 2.0
@@ -21,8 +23,10 @@ BuildArch:        noarch
 BuildRequires:    R-devel
 BuildRequires:    tex(latex)
 BuildRequires:    R-utils
+%if %{with check}
 BuildRequires:    R-RUnit
 BuildRequires:    R-foreach
+%endif
 
 %description
 Support for iterators, which allow a programmer to traverse through all the
@@ -47,7 +51,9 @@ rm -f %{buildroot}%{rlibdir}/R.css
 
 
 %check
+%if %{with check}
 %{_bindir}/R CMD check %{packname}
+%endif
 
 
 %files
@@ -66,6 +72,10 @@ rm -f %{buildroot}%{rlibdir}/R.css
 
 
 %changelog
+* Thu Jun  4 2020 Tom Callaway <spot@fedoraproject.org> - 1.0.12-3
+- conditionalize check, break loop with foreach
+- rebuild for R 4
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.12-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild