diff --git a/composer.json b/composer.json
index 9c0f0459..aa50842b 100644
--- a/composer.json
+++ b/composer.json
@@ -52,7 +52,7 @@
         "dotkernel/dot-errorhandler": "^3.2.0",
         "dotkernel/dot-flashmessenger": "^3.2.0",
         "dotkernel/dot-form": "^4.0.1",
-        "dotkernel/dot-mail": "^3.3.0",
+        "dotkernel/dot-mail": "~3.4 || ~4.0",
         "dotkernel/dot-navigation": "^3.2.0",
         "dotkernel/dot-rbac-guard": "^3.2.1",
         "dotkernel/dot-response-header": "^3.1.0",