diff --git a/Dockerfile.concourse b/Dockerfile.concourse
index e0fafd5..485ac4a 100644
--- a/Dockerfile.concourse
+++ b/Dockerfile.concourse
@@ -1,4 +1,4 @@
-FROM onsdigital/dp-concourse-tools-ubuntu
+FROM onsdigital/dp-concourse-tools-ubuntu-20:ubuntu20.4-rc.1
 
 WORKDIR /app/