diff --git a/platform/rust/Cargo.lock b/platform/rust/Cargo.lock
index 5f2872d7..f8146b55 100644
--- a/platform/rust/Cargo.lock
+++ b/platform/rust/Cargo.lock
@@ -20,7 +20,7 @@ dependencies = [
 
 [[package]]
 name = "mailchecker"
-version = "3.3.8"
+version = "3.3.9"
 dependencies = [
  "fast_chemail 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "pretty_assertions 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",