diff --git a/.github/workflows/ubuntu-20-04-runners.yml b/.github/workflows/ubuntu-20-04-runners.yml
index 35094699..f9ac0296 100644
--- a/.github/workflows/ubuntu-20-04-runners.yml
+++ b/.github/workflows/ubuntu-20-04-runners.yml
@@ -16,7 +16,7 @@ on:
       - '!runner/Dockerfile.ubuntu.1804'
 
 env:
-  RUNNER_VERSION: 2.284.0
+  RUNNER_VERSION: 2.285.0
   DOCKER_VERSION: 20.10.8
   DOCKERHUB_USERNAME: summerwind