diff --git a/bcftools.wdl b/bcftools.wdl
index bd79c2c64f7c0ca6d61a9aa24e1407be83b2efe5..e1ec3059d022a76be71550ff9e993d8f1bc6d445 100644
--- a/bcftools.wdl
+++ b/bcftools.wdl
@@ -86,7 +86,7 @@ task Stats {
 
         Int threads = 0
         Int timeMinutes = 1 + 2* ceil(size(select_all([inputVcf, compareVcf]), "G"))  # TODO: Estimate, 2 minutes per GB, refine later.
-        String memory = "2G"  # TODO: Safe estimate, refine later.  
+        String memory = "256M" 
         String dockerImage = "quay.io/biocontainers/bcftools:1.9--ha228f0b_3"
     }