diff --git a/docker/nginx/Dockerfile b/docker/nginx/Dockerfile
index 43c4b7f9..c8ef7baf 100644
--- a/docker/nginx/Dockerfile
+++ b/docker/nginx/Dockerfile
@@ -1,4 +1,4 @@
-FROM openresty/openresty:1.19.9.1-bionic
+FROM openresty/openresty:1.19.9.1-focal
 
 RUN luarocks install lua-resty-http && \
     luarocks install hasher && \