diff --git a/stack/docker-compose.yml b/stack/docker-compose.yml
index b4839948..878c4e4d 100644
--- a/stack/docker-compose.yml
+++ b/stack/docker-compose.yml
@@ -95,7 +95,7 @@ services:
 
   # === Mail ===
   mailpit:
-    image: axllent/mailpit:v1.20.6@sha256:777080b355ef30e99b23007e4d043b452cf84fd4dcb378ef30da5a0aa316c33d
+    image: axllent/mailpit:v1.21.4@sha256:118232ebacd935ed78db3b0844e046ff8cabd58afb8eb04b581ef1765dc0df7c
     ports:
       - '1025:1025' # SMTP Server
       - '8025:8025' # UI