diff --git a/definition-files/ubuntu/Singularity.ubuntu-18.04-cuda-10.1.168-openmpi-3.1.4 b/definition-files/ubuntu/Singularity.ubuntu-18.04-cuda-10.1.168-openmpi-3.1.4
index 1c2585022f54fdf9d9027f8d9c555c77730be80e..bacf531310fa3ca12391b821af9e71e9c8a9a73a 100644
--- a/definition-files/ubuntu/Singularity.ubuntu-18.04-cuda-10.1.168-openmpi-3.1.4
+++ b/definition-files/ubuntu/Singularity.ubuntu-18.04-cuda-10.1.168-openmpi-3.1.4
@@ -1,5 +1,5 @@
 Bootstrap: shub
-From: mkandes/ubuntu-cuda:ubuntu-18.04-cuda-10.1.168
+From: mkandes/naked-singularity:ubuntu-18.04-cuda-10.1.168
 
 %labels
 
@@ -10,7 +10,7 @@ From: mkandes/ubuntu-cuda:ubuntu-18.04-cuda-10.1.168
     AUTHOR_NAME Marty Kandes
     AUTHOR_EMAIL mkandes@sdsc.edu
 
-    LAST_UPDATED 20200715
+    LAST_UPDATED 20201227
 
 %setup