diff --git a/testdata/Dockerfile b/testdata/Dockerfile
index 20eb5c6..b7ff22b 100644
--- a/testdata/Dockerfile
+++ b/testdata/Dockerfile
@@ -1,4 +1,4 @@
-FROM rockylinux/rockylinux:9-ubi-init@sha256:74d44880f0fe91a2258d83c8be563262571e69a9388bdab0794b1fc9f13f798a AS kdc
+FROM rockylinux/rockylinux:9-ubi-init@sha256:3643525d53571f992a6bf37f73b636efbb5601f5cdc62d06395ee7154c037b3b AS kdc
 
 EXPOSE 8088
 EXPOSE 8464
@@ -21,7 +21,7 @@ RUN kadmin.local ktadd -norandkey -k /etc/test.keytab test
 RUN kadmin.local addprinc -randkey DNS/ns.example.com
 RUN kadmin.local ktadd -k /etc/dns.keytab DNS/ns.example.com
 
-FROM rockylinux/rockylinux:9-ubi-init@sha256:74d44880f0fe91a2258d83c8be563262571e69a9388bdab0794b1fc9f13f798a AS ns
+FROM rockylinux/rockylinux:9-ubi-init@sha256:3643525d53571f992a6bf37f73b636efbb5601f5cdc62d06395ee7154c037b3b AS ns
 
 EXPOSE 8053