diff --git a/hmftools.wdl b/hmftools.wdl
index 5776dfed6e56c43c6f302e8256a3ce9c9ecab6c1..3b09beb9aa9256e3bd251d9fd3f0d6b0dcccda46 100644
--- a/hmftools.wdl
+++ b/hmftools.wdl
@@ -37,7 +37,7 @@ task Amber {
         Int threads = 2
         String memory = "70GiB"
         String javaXmx = "64G"
-        Int timeMinutes = 240
+        Int timeMinutes = 480
         String dockerImage = "quay.io/biocontainers/hmftools-amber:3.5--0"
     }