diff --git a/deny.toml b/deny.toml
index 3966655..2382675 100644
--- a/deny.toml
+++ b/deny.toml
@@ -74,6 +74,7 @@ allow = [
     "Apache-2.0",
     "BSD-2-Clause",
     "BSD-3-Clause",
+    "BSL-1.0",
     "ISC",
     "MIT",
     "Unicode-DFS-2016",