diff --git a/deny.toml b/deny.toml
index ff06bbf..802ef93 100644
--- a/deny.toml
+++ b/deny.toml
@@ -34,6 +34,7 @@ allow = [
     "BSD-2-Clause",
     "BSD-3-Clause",
     "BSD-2-Clause-Patent",
+    "BSL-1.0",
     "CC-BY-1.0",
     "CC-BY-2.0",
     "CC-BY-3.0",