diff --git a/biopet/biopet.wdl b/biopet/biopet.wdl
index cd3578b0a393974fdb7383ea58c86946b092d362..881a84fbe23f6c285ad45062e7293a4f49d2c34f 100644
--- a/biopet/biopet.wdl
+++ b/biopet/biopet.wdl
@@ -388,7 +388,7 @@ task VcfStats {
         Array[String]+? sparkConfigValues
 
         Int memory = 4
-        Float memoryMultiplier = 2.0
+        Float memoryMultiplier = 2.5
         File? toolJar
         String? preCommand
     }