diff --git a/.gitignore b/.gitignore
index 974050a..a2d51ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ BufferedMatrix_1.12.0.tar.gz
 /BufferedMatrix_1.40.0.tar.gz
 /BufferedMatrix_1.44.0.tar.gz
 /BufferedMatrix_1.50.0.tar.gz
+/BufferedMatrix_1.52.0.tar.gz
diff --git a/R-BufferedMatrix.spec b/R-BufferedMatrix.spec
index 31b645e..f23545f 100644
--- a/R-BufferedMatrix.spec
+++ b/R-BufferedMatrix.spec
@@ -2,8 +2,8 @@
 %global Rvers      3.4.0
 
 Name:              R-%{packname}
-Version:           1.50.0
-Release:           2%{dist}
+Version:           1.52.0
+Release:           1%{dist}
 Summary:           A matrix data storage object method from bioconductor
 Summary(fr):       Stockage des données d'un matrice dans un fichier temporaire
 License:           LGPLv2+
@@ -74,6 +74,10 @@ rm -rf %{buildroot}%{_libdir}/R/library/R.css
 
 
 %changelog
+* Mon Jun  8 2020 Tom Callaway <spot@fedoraproject.org> - 1.52.0-1
+- update to 1.52.0
+- rebuild for R 4
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.50.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
 
diff --git a/sources b/sources
index 736059c..751b489 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (BufferedMatrix_1.50.0.tar.gz) = 14dda2d3ff80f7623bb6dbc01870cd319d3095ba2e791ea7d80a9e078fb45140d3f0180522d137690adf3457c3dd70f9dd15ff28cea023d6560610ddfd7210d3
+SHA512 (BufferedMatrix_1.52.0.tar.gz) = a08ee0159495c8e685e999af4660182f6fa771606a00e9bacc6a1a4c6fe0669f94dd9e99035ed95f2998734abe4caa3133a38d242bf1a6c206126a2c6838ffa1