diff --git a/deny.toml b/deny.toml
index 22e1b689e..252f8b813 100644
--- a/deny.toml
+++ b/deny.toml
@@ -24,6 +24,7 @@ allow = [
   "BSD-2-Clause",
   "BSD-2-Clause-FreeBSD",
   "BSD-3-Clause",
+  "BSL-1.0",
   "CC0-1.0",
   "Unicode-DFS-2016",
 ]