diff --git a/Containerfile b/Containerfile
index 4a3f20c..47257d1 100644
--- a/Containerfile
+++ b/Containerfile
@@ -39,10 +39,21 @@ COPY . /src
 WORKDIR /src
 RUN rm -vf /src/*.repo
 COPY --from=repos /etc/yum.repos.d/*.repo /src
-RUN --mount=type=cache,target=/workdir --mount=type=bind,rw=true,src=.,dst=/buildcontext,bind-propagation=shared rpm-ostree compose image \
- --image-config fedora-bootc-config.json --cachedir=/workdir --format=ociarchive --initialize ${MANIFEST} /buildcontext/out.ociarchive
+# Brutally inject releasever and repos into manifest file. This is a major hack
+# until rpm-ostree does this on its own: https://github.com/coreos/rpm-ostree/pull/5136
+RUN --mount=type=bind,from=repos,src=/,dst=/repos source /repos/etc/os-release && \
+ echo -e "\nreleasever: $VERSION_ID" >> ${MANIFEST} && \
+ echo -e "\nrepos:\n" >> ${MANIFEST} && \
+ dnf repolist --setopt=reposdir=. | tail -n +2 | cut -f1 -d' ' | sed 's/^/- /' >> ${MANIFEST}
+RUN --mount=type=cache,target=/workdir \
+    --mount=type=bind,rw=true,src=.,dst=/buildcontext,bind-propagation=shared \
+      rpm-ostree compose image --image-config fedora-bootc-config.json \
+        --cachedir=/workdir --format=ociarchive --initialize ${MANIFEST} \
+        /buildcontext/out.ociarchive
 
 FROM oci-archive:./out.ociarchive
 # Need to reference builder here to force ordering. But since we have to run
 # something anyway, we might as well cleanup after ourselves.
-RUN --mount=type=bind,from=builder,src=.,target=/var/tmp --mount=type=bind,rw=true,src=.,dst=/buildcontext,bind-propagation=shared rm /buildcontext/out.ociarchive
+RUN --mount=type=bind,from=builder,src=.,target=/var/tmp \
+    --mount=type=bind,rw=true,src=.,dst=/buildcontext,bind-propagation=shared \
+      rm /buildcontext/out.ociarchive
diff --git a/README.md b/README.md
index 557e94f..65dc8d9 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,16 @@ podman build --security-opt=label=disable --cap-add=all \
 
 See the `Containerfile` for more details. This builds the default `tier-1` image.
 
+## Fedora versions
+
+By default, the base images are built for Fedora rawhide. To build against a
+different Fedora version, you can override the `FROM` image used to obtain the
+Fedora repos and dnf variables. E.g.:
+
+```
+podman build --from quay.io/fedora/fedora:41 ...
+```
+
 ### Deriving
 
 You are of course also free to fork, customize, and build base images yourself.
diff --git a/fedora-40.yaml b/fedora-40.yaml
new file mode 100644
index 0000000..647be5a
--- /dev/null
+++ b/fedora-40.yaml
@@ -0,0 +1,7 @@
+# NB: This treefile is used by the legacy pungi path only to build tier-1. It
+# will be removed in the future.
+releasever: 40
+repos:
+  - fedora
+  - fedora-updates
+include: fedora-bootc.yaml
diff --git a/fedora-41.yaml b/fedora-41.yaml
new file mode 100644
index 0000000..51026d4
--- /dev/null
+++ b/fedora-41.yaml
@@ -0,0 +1,7 @@
+# NB: This treefile is used by the legacy pungi path only to build tier-1. It
+# will be removed in the future.
+releasever: 41
+repos:
+  - fedora
+  - fedora-updates
+include: fedora-bootc.yaml
diff --git a/fedora-bootc.yaml b/fedora-bootc.yaml
index 9b61e19..68dc692 100644
--- a/fedora-bootc.yaml
+++ b/fedora-bootc.yaml
@@ -1,7 +1,3 @@
-releasever: rawhide
-repos:
-  - rawhide
-
 metadata:
   name: fedora-boot-tier1
   summary: Fedora Bootable Tier 1
diff --git a/fedora-rawhide.yaml b/fedora-rawhide.yaml
new file mode 100644
index 0000000..5eec79c
--- /dev/null
+++ b/fedora-rawhide.yaml
@@ -0,0 +1,6 @@
+# NB: This treefile is used by the legacy pungi path only to build tier-1. It
+# will be removed in the future.
+releasever: rawhide
+repos:
+  - fedora-rawhide
+include: fedora-bootc.yaml
diff --git a/fedora-tier-0.yaml b/fedora-tier-0.yaml
index c24d5c4..6cef2a1 100644
--- a/fedora-tier-0.yaml
+++ b/fedora-tier-0.yaml
@@ -1,7 +1,3 @@
-releasever: rawhide
-repos:
-  - rawhide
-
 metadata:
   name: fedora-boot-tier0
   summary: Fedora Bootable Tier 0
diff --git a/fedora-tier-x.yaml b/fedora-tier-x.yaml
index 19e08c8..90a96fd 100644
--- a/fedora-tier-x.yaml
+++ b/fedora-tier-x.yaml
@@ -1,7 +1,3 @@
-releasever: rawhide
-repos:
-  - rawhide
-
 metadata:
   name: fedora-boot-tier-x
   summary: Fedora Bootable Tier X