diff --git a/Dockerfile b/Dockerfile
index 8ac70ba..8ce836f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # temporary image
-FROM ubuntu:19.04 AS treetagger_builder
+FROM ubuntu:20.04 AS treetagger_builder
 
 # TreeTagger version
 ARG VERSION=3.2.2