diff --git a/arm64v8.dockerfile b/arm64v8.dockerfile
index b828153..29e533a 100644
--- a/arm64v8.dockerfile
+++ b/arm64v8.dockerfile
@@ -39,6 +39,7 @@ ENV enableAudioScript=true
 ENV enableVideoScript=true
 ENV matchDistance=5
 ENV videoFormat="bestvideo*+bestaudio/best"
+ENV scriptInterval=15m
 
 RUN \
 	echo "*** install packages ***" && \