diff --git a/.gitignore b/.gitignore
index 9e8aebc..8d28793 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /ape_5.0.tar.gz
+/ape_5.1.tar.gz
diff --git a/R-ape.spec b/R-ape.spec
index f03dc49..1a65d75 100644
--- a/R-ape.spec
+++ b/R-ape.spec
@@ -3,7 +3,7 @@
 
 
 Name:             R-%{packname}
-Version:          5.0
+Version:          5.1
 Release:          1%{?dist}
 Summary:          Analyses of Phylogenetics and Evolution
 
@@ -18,10 +18,10 @@ Source0:          https://cran.r-project.org/src/contrib/%{packname}_%{version}.
 # LinkingTo:
 # Enhances:
 
-Requires:         R-nlme R-lattice R-graphics R-methods R-stats R-tools R-utils R-parallel R-Rcpp
+Requires:         R-nlme R-lattice R-graphics R-methods R-stats R-tools R-utils R-parallel R-Rcpp >= 0.12.0
 Suggests:         R-gee R-expm
 BuildRequires:    R-devel tex(latex)
-BuildRequires:    R-nlme R-lattice R-graphics R-methods R-stats R-tools R-utils R-parallel R-Rcpp-devel
+BuildRequires:    R-nlme R-lattice R-graphics R-methods R-stats R-tools R-utils R-parallel R-Rcpp-devel >= 0.12.0
 BuildRequires:    R-gee R-expm
 
 %description
@@ -78,5 +78,8 @@ rm -f %{buildroot}%{rlibdir}/R.css
 
 
 %changelog
+* Wed May 16 2018 Tom Callaway <spot@fedoraproject.org> - 5.1-1
+- update to 5.1, rebuild for R 3.5.0
+
 * Fri Mar 23 2018 Elliott Sales de Andrade <quantum.analyst@gmail.com> - 5.0-1
 - initial package for Fedora
diff --git a/sources b/sources
index cb0b670..93aee40 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ape_5.0.tar.gz) = ea67c3be6206e9efc17065bfa8db7afd98bf7d309cb952a9285377d425afee5d6a94bceabf10a29ad94fc74eb2b1210447b93ef41b957814b05056d806a65b60
+SHA512 (ape_5.1.tar.gz) = 597bf6640401be4780514839144ec88d07157cc0bbfd84335a513f2ab90397a6d535384cfe5b9c7949b91d9b8d4e440ef48f8468b40a162c6b8b03a05bd68955