diff --git a/src/docker.ts b/src/docker.ts
index abc64d48..f6d2e709 100644
--- a/src/docker.ts
+++ b/src/docker.ts
@@ -1,7 +1,7 @@
 class Docker {
   readonly repository = 'renovate/renovate';
   // renovate: datasource=docker depName=renovate/renovate versioning=docker
-  readonly tag = '31.15.0-slim';
+  readonly tag = '31.18.0-slim';
   readonly tagSuffix = '-slim';
 
   image(): string {