diff --git a/julia.sh b/julia.sh
index e2cc81b..1dc0455 100755
--- a/julia.sh
+++ b/julia.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 set -e
-BASE_URL=${TUNASYNC_UPSTREAM_URL:-"pkg.julialang.org"}
+BASE_URL=${TUNASYNC_UPSTREAM_URL:-"https://pkg.julialang.org"}
 [[ -d "${TUNASYNC_WORKING_DIR}" ]]
 cd "${TUNASYNC_WORKING_DIR}"