diff --git a/hmftools.wdl b/hmftools.wdl
index 8beb5c7694d2d1d8422db88b2551eff38a80c2d9..868d03fe48fdbf8aa1b0e1f362ff45efa6f89f4a 100644
--- a/hmftools.wdl
+++ b/hmftools.wdl
@@ -35,8 +35,8 @@ task Amber {
         File referenceFastaDict
 
         Int threads = 2
-        String memory = "52G"
-        String javaXmx = "50G"
+        String memory = "70G"
+        String javaXmx = "64G"
         Int timeMinutes = 240
         String dockerImage = "quay.io/biocontainers/hmftools-amber:3.5--0"
     }