diff --git a/geneit_backend/Cargo.lock b/geneit_backend/Cargo.lock
index 8e1cbb3..c7ec788 100644
--- a/geneit_backend/Cargo.lock
+++ b/geneit_backend/Cargo.lock
@@ -2155,9 +2155,9 @@ checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
 
 [[package]]
 name = "lettre"
-version = "0.11.8"
+version = "0.11.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1658ac89b01055e3ba23d66ecf6f8b97388ebe34ce125e49f8ef71234fb8aaba"
+checksum = "69f204773bab09b150320ea1c83db41dc6ee606a4bc36dc1f43005fe7b58ce06"
 dependencies = [
  "base64",
  "chumsky",