diff --git a/ci/docker/docker-compose.yml b/ci/docker/docker-compose.yml
index ca00f9ff86bf..55ddf25b9a09 100644
--- a/ci/docker/docker-compose.yml
+++ b/ci/docker/docker-compose.yml
@@ -95,7 +95,7 @@ services:
       dockerfile: Dockerfile.build.ubuntu
       target: base
       args:
-        BASE_IMAGE: ubuntu:18.04
+        BASE_IMAGE: ubuntu:20.04
       cache_from:
         - ${DOCKER_CACHE_REGISTRY}/build.ubuntu_cpu:latest
   ubuntu_gpu_cu101: