diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9ee9ce3..9d949e3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -26,6 +26,6 @@ repos:
     hooks:
       - id: markdownlint
   - repo: https://github.com/maxbrunet/pre-commit-renovate
-    rev: 37.49.5
+    rev: 37.56.4
     hooks:
       - id: renovate-config-validator
diff --git a/Containerfile b/Containerfile
index f334b24..6b4b142 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,6 +1,6 @@
 # This image contains cloud-init, which makes it usable out of the box
 # for e.g. a pre-generated AWS or KVM guest system.
-FROM quay.io/centos-boot/fedora-tier-1:eln
+FROM quay.io/centos-boot/fedora-tier-1:eln@sha256:52dd1a519a9b67ff141827375cd7cec6b51eff8725934ee19700a5725c2b2f9a
 RUN dnf -y install cloud-init && \
     ln -s ../cloud-init.target /usr/lib/systemd/system/default.target.wants && \
     rm /var/log/*.log /var/lib/dnf -rf && ostree container commit
diff --git a/fedora-boot-cloud/Containerfile b/fedora-boot-cloud/Containerfile
index b8f1cb0..b9e5420 100644
--- a/fedora-boot-cloud/Containerfile
+++ b/fedora-boot-cloud/Containerfile
@@ -1,6 +1,6 @@
 # This image contains cloud-init, which makes it usable out of the box
 # for e.g. a pre-generated AWS or KVM guest system.
-FROM quay.io/centos-boot/fedora-tier-1-dev:eln
+FROM quay.io/centos-boot/fedora-tier-1-dev:eln@sha256:2b12163056f0db2c52d6040aabca9ffc0bc787c70f414938895b8a9611a6453e
 RUN dnf -y install cloud-init && \
     ln -s ../cloud-init.target /usr/lib/systemd/system/default.target.wants && \
     rm /var/log/*.log /var/lib/dnf -rf && ostree container commit