diff --git a/aria2/Dockerfile b/aria2/Dockerfile
index 2c46fac..7f87ca3 100644
--- a/aria2/Dockerfile
+++ b/aria2/Dockerfile
@@ -17,7 +17,7 @@ RUN apt-get update \
     && rm -rf /var/lib/apt/lists/* \
     && mkdir -p $ETC $DIR \
     && cd $ETC \
-    && openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout $KEY -out $CERT
+    && openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout $KEY -out $CERT -batch
 
 EXPOSE $PORT
 VOLUME $DIR $ETC