diff --git a/docker/Dockerfile.windows.1809 b/docker/Dockerfile.windows.1809
index 7afe6fb..0c5e07a 100644
--- a/docker/Dockerfile.windows.1809
+++ b/docker/Dockerfile.windows.1809
@@ -1,5 +1,5 @@
 # escape=`
-FROM plugins/base:windows-1809
+FROM plugins/base:windows-1809-amd64@sha256:61095306fa56d51adc841f2b0f93f511efb5792d12f2549bb2eb1cbce02c1f05
 
 LABEL maintainer="Drone.IO Community <drone-dev@googlegroups.com>" `
   org.label-schema.name="Drone Gitea Release" `