diff --git a/gatk.wdl b/gatk.wdl
index ae38c4b88625152c24ede2c5f32f628355e1d695..bbc00becaefacdd4258c3002efa6e30eb5f5711f 100644
--- a/gatk.wdl
+++ b/gatk.wdl
@@ -170,7 +170,7 @@ task GenotypeGVCFs {
         File? dbsnpVCF
         File? dbsnpVCFIndex
         Int memory = 6
-        Float memoryMultiplier = 2.0
+        Float memoryMultiplier = 3.0
         String dockerImage = "quay.io/biocontainers/gatk4:4.1.0.0--0"
     }