diff --git a/test/fixtures/krb5kdc-fixture/Dockerfile b/test/fixtures/krb5kdc-fixture/Dockerfile
index 55ffacbdedb8a..c194f2637a2d9 100644
--- a/test/fixtures/krb5kdc-fixture/Dockerfile
+++ b/test/fixtures/krb5kdc-fixture/Dockerfile
@@ -2,7 +2,7 @@ FROM ubuntu:14.04
 RUN apt update -y
 RUN apt upgrade -y
 ADD . /fixture
-RUN echo kerberos.build.opensearch.org > /etc/hostname && echo "127.0.0.1 kerberos.build.opensearch.org" >> /etc/hosts
+RUN echo kerberos.build.opensearch.org > /etc/hostname
 RUN bash /fixture/src/main/resources/provision/installkdc.sh
 
 EXPOSE 88