diff --git a/ActivityPub/activity.go b/ActivityPub/activity.go
index dd4666d..37a4ef7 100644
--- a/ActivityPub/activity.go
+++ b/ActivityPub/activity.go
@@ -19,7 +19,7 @@ import (
 	"github.com/yukimochi/httpsig"
 )
 
-var UA_STRING = "YUKIMOCHI Toot Relay Service (golang net/http; Activity-Relay v0.0.2; " + os.Getenv("RELAY_DOMAIN") + ")"
+var UA_STRING = os.Getenv("RELAY_SERVICENAME") + " (golang net/http; Activity-Relay v0.1.0; " + os.Getenv("RELAY_DOMAIN") + ")"
 
 func appendSignature(r *http.Request, body *[]byte, KeyID string, pKey *rsa.PrivateKey) error {
 	hash := sha256.New()
diff --git a/docker-compose.yml b/docker-compose.yml
index b6077c9..5850d5d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,6 +12,7 @@ services:
     command: worker
     environment:
       - "ACTOR_PEM=/actor.pem"
+      - "RELAY_SERVICENAME=YUKIMOCHI Toot Relay Service"
       - "RELAY_DOMAIN=relay.toot.yukimochi.jp"
       - "REDIS_URL=redis:6379"
     volumes:
@@ -25,6 +26,7 @@ services:
     command: server
     environment:
       - "ACTOR_PEM=/actor.pem"
+      - "RELAY_SERVICENAME=YUKIMOCHI Toot Relay Service"
       - "RELAY_DOMAIN=relay.toot.yukimochi.jp"
       - "RELAY_BIND=0.0.0.0:8080"
       - "REDIS_URL=redis:6379"