diff --git a/Makefile.version.aarch64.var b/Makefile.version.aarch64.var
index b5f4cf1d9b..ee546e68f0 100644
--- a/Makefile.version.aarch64.var
+++ b/Makefile.version.aarch64.var
@@ -1 +1 @@
-OCP_VERSION := 4.21.0-0.nightly-arm64-2025-12-24-234930
+OCP_VERSION := 4.21.0-0.nightly-arm64-2025-12-25-234930
diff --git a/Makefile.version.x86_64.var b/Makefile.version.x86_64.var
index 28e0b0b1da..d43d0568a1 100644
--- a/Makefile.version.x86_64.var
+++ b/Makefile.version.x86_64.var
@@ -1 +1 @@
-OCP_VERSION := 4.21.0-0.nightly-2025-12-24-191318
+OCP_VERSION := 4.21.0-0.nightly-2025-12-25-181920
diff --git a/assets/components/multus/release-multus-aarch64.json b/assets/components/multus/release-multus-aarch64.json
index d94d1c9d10..37cf610498 100644
--- a/assets/components/multus/release-multus-aarch64.json
+++ b/assets/components/multus/release-multus-aarch64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-arm64-2025-12-24-234930"
+    "base": "4.21.0-0.nightly-arm64-2025-12-25-234930"
   },
   "images": {
     "multus-cni-microshift": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:05e4dae9e1a0104ec5bf61c7f36b84cb153857b2918c0ad937299adde7e561c1",
diff --git a/assets/components/multus/release-multus-x86_64.json b/assets/components/multus/release-multus-x86_64.json
index 960bc49662..e292b1f25f 100644
--- a/assets/components/multus/release-multus-x86_64.json
+++ b/assets/components/multus/release-multus-x86_64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-2025-12-24-191318"
+    "base": "4.21.0-0.nightly-2025-12-25-181920"
   },
   "images": {
     "multus-cni-microshift": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:b13469b9b98f43298939efc9a8b113d0c48930e401c3f9bfc223089a0c7f20c4",
diff --git a/assets/optional/operator-lifecycle-manager/release-olm-aarch64.json b/assets/optional/operator-lifecycle-manager/release-olm-aarch64.json
index 292e60f937..37236614e3 100644
--- a/assets/optional/operator-lifecycle-manager/release-olm-aarch64.json
+++ b/assets/optional/operator-lifecycle-manager/release-olm-aarch64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-arm64-2025-12-24-234930"
+    "base": "4.21.0-0.nightly-arm64-2025-12-25-234930"
   },
   "images": {
     "operator-lifecycle-manager": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:91948688e347b355b3adee9944a09668fb226801897360b206e1e14987a155c8",
diff --git a/assets/optional/operator-lifecycle-manager/release-olm-x86_64.json b/assets/optional/operator-lifecycle-manager/release-olm-x86_64.json
index 2f785b47af..554b18e1d9 100644
--- a/assets/optional/operator-lifecycle-manager/release-olm-x86_64.json
+++ b/assets/optional/operator-lifecycle-manager/release-olm-x86_64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-2025-12-24-191318"
+    "base": "4.21.0-0.nightly-2025-12-25-181920"
   },
   "images": {
     "operator-lifecycle-manager": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:93846c31a6aef05baea9b45372fc53dcb1e8598eee2bcc73210bff6b6ae3e6f3",
diff --git a/assets/release/release-aarch64.json b/assets/release/release-aarch64.json
index 9b6a763aad..66f14d4da8 100644
--- a/assets/release/release-aarch64.json
+++ b/assets/release/release-aarch64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-arm64-2025-12-24-234930"
+    "base": "4.21.0-0.nightly-arm64-2025-12-25-234930"
   },
   "images": {
     "cli": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:61fde2654826a0b825a95ffcda44b646fdde0a6a130a9bca45181b1fe5ed91be",
diff --git a/assets/release/release-x86_64.json b/assets/release/release-x86_64.json
index 95403a9bc5..1585487d4b 100644
--- a/assets/release/release-x86_64.json
+++ b/assets/release/release-x86_64.json
@@ -1,6 +1,6 @@
 {
   "release": {
-    "base": "4.21.0-0.nightly-2025-12-24-191318"
+    "base": "4.21.0-0.nightly-2025-12-25-181920"
   },
   "images": {
     "cli": "quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:0fb592c7c59bae38bd9179db0926d49bd8d070c4fa25a09a1832600512511e1f",
diff --git a/scripts/auto-rebase/last_rebase.sh b/scripts/auto-rebase/last_rebase.sh
index c7b63c7527..8963f3e6ba 100755
--- a/scripts/auto-rebase/last_rebase.sh
+++ b/scripts/auto-rebase/last_rebase.sh
@@ -1,2 +1,2 @@
 #!/bin/bash -x
-./scripts/auto-rebase/rebase.sh to "registry.ci.openshift.org/ocp/release:4.21.0-0.nightly-2025-12-24-191318" "registry.ci.openshift.org/ocp-arm64/release-arm64:4.21.0-0.nightly-arm64-2025-12-24-234930"
+./scripts/auto-rebase/rebase.sh to "registry.ci.openshift.org/ocp/release:4.21.0-0.nightly-2025-12-25-181920" "registry.ci.openshift.org/ocp-arm64/release-arm64:4.21.0-0.nightly-arm64-2025-12-25-234930"