diff --git a/docker/docker-compose.1604.51.yaml b/docker/docker-compose.1604.51.yaml
index 72aee2631..3d738695f 100644
--- a/docker/docker-compose.1604.51.yaml
+++ b/docker/docker-compose.1604.51.yaml
@@ -6,7 +6,7 @@ services:
     image: async-http-client:16.04-5.1
     build:
       args:
-        ubuntu_version: "bionic"
+        ubuntu_version: "xenial"
         swift_version: "5.1.3"
 
   test: