diff --git a/Dockerfile b/Dockerfile
index 23ed7a5..ba21e07 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,4 +12,6 @@ FROM scratch
 COPY --from=builder /checker-ldap /checker-ldap
 USER 65534:65534
 EXPOSE 8080
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD ["/checker-ldap", "-healthcheck"]
 ENTRYPOINT ["/checker-ldap"]
diff --git a/go.mod b/go.mod
index 9c2bbe1..cd67e13 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module git.happydns.org/checker-ldap
 go 1.25.0
 
 require (
-	git.happydns.org/checker-sdk-go v1.4.0
+	git.happydns.org/checker-sdk-go v1.5.0
 	git.happydns.org/checker-tls v0.6.2
 	github.com/go-ldap/ldap/v3 v3.4.8
 	github.com/miekg/dns v1.1.72
diff --git a/go.sum b/go.sum
index 9bdc5e9..8e03ba4 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-git.happydns.org/checker-sdk-go v1.4.0 h1:sO8EnF3suhNgYLRsbmCZWJOymH/oNMrOUqj3FEzJArs=
-git.happydns.org/checker-sdk-go v1.4.0/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=
 git.happydns.org/checker-tls v0.6.2 h1:8oKia1XlD+tklyqrwzmUgFH1Kw8VLSLLF9suZ7Qr14E=
 git.happydns.org/checker-tls v0.6.2/go.mod h1:9tpnxg0iOwS+7If64DRG1jqYonUAgxOBuxwfF5mVkL4=
 github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 h1:mFRzDkZVAjdal+s7s0MwaRv9igoPqLRdzOLzw/8Xvq8=