diff --git a/cache.go b/cache.go
index 5e0b3b9..363dfd5 100644
--- a/cache.go
+++ b/cache.go
@@ -13,7 +13,16 @@ import (
 func renewCache(url string) (*meta, error) {
 	var cachePath = urlToCachePath(url)
 
-	resp, err := http.Get(url)
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		return nil, errors.Wrap(err, "Unable to create request")
+	}
+
+	if cfg.UserAgent != "" {
+		req.Header.Set("User-Agent", cfg.UserAgent)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		return nil, errors.Wrap(err, "Unable to fetch source file")
 	}
diff --git a/main.go b/main.go
index c2a3e7f..c5ebe5b 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ var (
 		Listen         string `flag:"listen" default:":3000" description:"Port/IP to listen on"`
 		LogLevel       string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
 		StorageDir     string `flag:"storage-dir" default:"./data/" description:"Where to store cached files"`
+		UserAgent      string `flag:"user-agent" default:"" description:"Override user-agent"`
 		VersionAndExit bool   `flag:"version" default:"false" description:"Prints current version and exits"`
 	}{}