diff --git a/tools/stats/gsummary.xml b/tools/stats/gsummary.xml
index fdab285c752..1eed2ad44e0 100644
--- a/tools/stats/gsummary.xml
+++ b/tools/stats/gsummary.xml
@@ -12,6 +12,9 @@
   </outputs>
   <requirements>
     <requirement type="python-module">rpy</requirement>
+    <requirement type="package">R</requirement>
+    <requirement type="package" version="2.15.1">R</requirement>
+    <requirement type="package">rpy</requirement>
   </requirements>
   <tests>
     <test>