diff --git a/src/test/java/test/ssh_agent/OutboundAgent.java b/src/test/java/test/ssh_agent/OutboundAgent.java
index 5dad98b9..3b8cd2f7 100644
--- a/src/test/java/test/ssh_agent/OutboundAgent.java
+++ b/src/test/java/test/ssh_agent/OutboundAgent.java
@@ -50,7 +50,7 @@
  */
 public final class OutboundAgent implements AutoCloseable {
 
-    private String image = "jenkins/ssh-agent";
+    private String image = "jenkins/ssh-agent:latest-jdk21";
 
     private SSHAgentContainer container;