diff --git a/internal/app/run/runner.go b/internal/app/run/runner.go
index 31a1b320..c709b462 100644
--- a/internal/app/run/runner.go
+++ b/internal/app/run/runner.go
@@ -117,7 +117,7 @@ func setupCache(cfg *config.Config, envs map[string]string) *cacheproxy.Handler
 
 		cacheServer, err := artifactcache.StartHandler(
 			cfg.Cache.Dir,
-			cfg.Cache.Host,
+			"", // automatically detect
 			cfg.Cache.Port,
 			cacheSecret,
 			log.StandardLogger().WithField("module", "cache_request"),