diff --git a/Dockerfile b/Dockerfile
index 4892102..25cc983 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # docker manifest inspect ubuntu:20.04 -v | jq '.[0].Descriptor.digest'
-FROM ubuntu:20.04@sha256:39e6324487ef503ef36c38bf0b57935d639398ca0d6081fd20a17f90b956a7a4
+FROM ubuntu:20.04@sha256:cc9cc8169c9517ae035cf293b15f06922cb8c6c864d625a72b7b18667f264b70
 
 ENV R_VERSION=4.4.0
 ENV TERM=xterm