diff --git a/docker/Dockerfile b/docker/Dockerfile
index 299a658..39499db 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -34,6 +34,7 @@ RUN apt update -q \
         tzdata \
         vim \
         xmlstarlet \
+        krb5-user \
     && apt clean
 
 # Install Python modules