diff --git a/deny.toml b/deny.toml
index 7182ad79e..a8f4c4544 100644
--- a/deny.toml
+++ b/deny.toml
@@ -100,6 +100,7 @@ allow = [
   "MIT",
   "Unicode-DFS-2016",
   "Apache-2.0",
+  "MPL-2.0",
   #"Apache-2.0 WITH LLVM-exception",
 ]
 # The confidence threshold for detecting a license from license text.