diff --git a/conf/singularity.config b/conf/singularity.config
index 469d9c56..10d37384 100644
--- a/conf/singularity.config
+++ b/conf/singularity.config
@@ -9,7 +9,7 @@
 singularity {
     enabled = true
     autoMounts = true
-    runOptions = "-B $TMPDIR"
+    runOptions = "-e --no-home -B $TMPDIR"
 }
 
 process {
diff --git a/pipeline.nf b/pipeline.nf
index 4a575672..1a37a65a 100755
--- a/pipeline.nf
+++ b/pipeline.nf
@@ -1472,6 +1472,7 @@ process SomaticAnnotateMaf {
     --filter-vcf 0
     
   python /usr/bin/oncokb_annotator/MafAnnotator.py \
+    -u "https://legacy.oncokb.org/api/v1" \
     -i ${outputPrefix}.raw.maf \
     -o ${outputPrefix}.raw.oncokb.maf