diff --git a/build.gradle b/build.gradle
index e2683b3c9d..953a88c75f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -68,7 +68,7 @@ ext {
     derbyVersion = '10.16.1.1'
     ftpServerVersion = '1.2.0'
     graalvmVersion = '23.0.2'
-    greenmailVersion = '2.1.0-alpha-3'
+    greenmailVersion = '2.1.0-alpha-4'
     groovyVersion = '4.0.16'
     hamcrestVersion = '2.2'
     hazelcastVersion = '5.3.6'