diff --git a/initfs/etc/wkit.d/s3-blackbox b/initfs/etc/wkit.d/s3-blackbox
index 25315fd..286a2ff 100644
--- a/initfs/etc/wkit.d/s3-blackbox
+++ b/initfs/etc/wkit.d/s3-blackbox
@@ -5,7 +5,7 @@
 
 TOKEN=$(echo "$NODE_NAME;$NODE_OWNER;$NODE_REGION;$NODE_ISP;$NODE_BANNER" | base64)
 
-wget -qO- --post-data "$TOKEN" http://blackbox.opentdp.org/api/join | sh -
+wget -qO- --post-data "$TOKEN" https://blackbox.opentdp.org/api/join | sh -
 
 # check config