diff --git a/Dockerfile b/Dockerfile
index 0e687fa..912fa7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:latest
 
-RUN apk add --no-cache curl bash busybox-cron tzdata
+RUN apk add --no-cache curl bash dcron tzdata
 
 COPY update-blocklist.sh /usr/local/bin/update-blocklist.sh
 COPY entrypoint.sh /entrypoint.sh
diff --git a/entrypoint.sh b/entrypoint.sh
index a9bdaf0..1918d3a 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -3,11 +3,15 @@
 set -e
 
 if [ -n "$TZ" ]; then
-  cp /usr/share/zoneinfo/$TZ /etc/localtime
-  echo "$TZ" > /etc/timezone
+  if [ -f "/usr/share/zoneinfo/$TZ" ]; then
+    cp "/usr/share/zoneinfo/$TZ" /etc/localtime
+    echo "$TZ" > /etc/timezone
+  else
+    echo "Warning: Timezone file /usr/share/zoneinfo/$TZ not found, skipping timezone setup."
+  fi
 fi
 
-CRON_EXPR="${BLOCKLIST_CRON:-"0 6 * * *"}" # default: every hour
+CRON_EXPR="${BLOCKLIST_CRON:-"0 6 * * *"}" # default: every day at 6:00 am
 SCRIPT_PATH="/usr/local/bin/update-blocklist.sh"
 
 echo "Installing cron job with expression: $CRON_EXPR"
@@ -15,4 +19,4 @@ echo "Installing cron job with expression: $CRON_EXPR"
 echo "$CRON_EXPR root $SCRIPT_PATH" > /etc/crontabs/root
 
 echo "Starting cron..."
-crond -f -L /dev/stdout
+exec crond -f -L /dev/stdout