diff --git a/Dockerfile b/Dockerfile
index 3424945..c2e6a7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-# syntax=docker/dockerfile:1.5
+# syntax=docker/dockerfile:1.6
 FROM nginx:1.25.3 as nginx
 
-FROM redhat/ubi9:9.2-755.1696514207 as rpm-build
+FROM redhat/ubi9:9.2 as rpm-build
 ARG NGINX
 ARG NJS
 ENV NGINX_VERSION ${NGINX}
diff --git a/Dockerfile.prebuilt b/Dockerfile.prebuilt
index b33937e..a253f63 100644
--- a/Dockerfile.prebuilt
+++ b/Dockerfile.prebuilt
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.5
+# syntax=docker/dockerfile:1.6
 FROM redhat/ubi9-minimal:9.2 as final
 ARG NGINX
 ARG NJS