diff --git a/Dockerfile b/Dockerfile
index 940860d..c897cc0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM jenkins/ssh-agent:5.9.0
+FROM jenkins/ssh-agent:5.9.0@sha256:68f0f5d017d55fde97f1ee4c6ab26c3c2f584aadcbcb5c695d2328c562272e5d
 
 # Copy the docker binary from the official docker image
 COPY --from=docker:24.0.6-cli@sha256:7b954b038ba50b02823f245665cfc52a69676bf8a5fa3d151d4a9aa56bbc5f09 /usr/local/bin/docker /usr/local/bin/docker