diff --git a/1.42.0/build.sh b/1.42.0/build.sh
index c4e0dfc..1647408 100755
--- a/1.42.0/build.sh
+++ b/1.42.0/build.sh
@@ -12,7 +12,7 @@ if [ -f $IMAGE ]; then
 	rm -fv $IMAGE
 fi
 
-apptainer build $IMAGE $DEFINITION
+sudo singularity build $IMAGE $DEFINITION
 
 if [ -f $IMAGE ]; then
 	exit 0