diff --git a/Dockerfile b/Dockerfile
index 1d0bce6..730f045 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@
 #
 
 # Pull base image.
-FROM jlesage/baseimage-gui:alpine-3.8-v3.5.2
+FROM jlesage/baseimage-gui:alpine-3.9-v3.5.2
 
 # Define software versions.
 ARG DUPEGURU_VERSION=4.0.3