diff --git a/Dockerfile b/Dockerfile
index 5bf4ff6..82f5642 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,4 +12,6 @@ FROM scratch
 COPY --from=builder /checker-kerberos /checker-kerberos
 USER 65534:65534
 EXPOSE 8080
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD ["/checker-kerberos", "-healthcheck"]
 ENTRYPOINT ["/checker-kerberos"]
diff --git a/go.mod b/go.mod
index 392087b..0257f14 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.happydns.org/checker-kerberos
 go 1.25.0
 
 require (
-	git.happydns.org/checker-sdk-go v1.3.0
+	git.happydns.org/checker-sdk-go v1.5.0
 	github.com/jcmturner/gofork v1.7.6
 	github.com/jcmturner/gokrb5/v8 v8.4.4
 )
diff --git a/go.sum b/go.sum
index e2b9a0d..7eadf2b 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-git.happydns.org/checker-sdk-go v1.3.0 h1:FG2kIhlJCzI0m35EhxSgn4UWc9M4ha6aZTeoChu4l7A=
-git.happydns.org/checker-sdk-go v1.3.0/go.mod h1:aNAcfYFfbhvH9kJhE0Njp5GX0dQbxdRB0rJ0KvSC5nI=
+git.happydns.org/checker-sdk-go v1.5.0 h1:5uD5Cm6xJ+lwnhbJ09iCXGHbYS9zRh+Yh0NeBHkAPBY=
+git.happydns.org/checker-sdk-go v1.5.0/go.mod h1:aNAcfYFfbhvH9kJhE0Njp5GX0dQbxdRB0rJ0KvSC5nI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=