diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 56a8733ad2..be5f83b1e1 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -22,7 +22,7 @@ updates:
     directory: "/"
     schedule:
       interval: daily
-    target-branch: "release/v4.3.x"
+    target-branch: "release/v4.0.x"
     # Only allow automated security-related dependency updates on release branches.
     open-pull-requests-limit: 0
     labels:
@@ -32,17 +32,7 @@ updates:
     directory: "/"
     schedule:
       interval: daily
-    target-branch: "release/v4.3.x-lsm"
-    # Only allow automated security-related dependency updates on release branches.
-    open-pull-requests-limit: 0
-    labels:
-      - dependencies
-
-    - package-ecosystem: gomod
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: "release/v4.4.x"
+    target-branch: "release/v4.5.x"
     # Only allow automated security-related dependency updates on release branches.
     open-pull-requests-limit: 0
     labels:
diff --git a/.mergify.yml b/.mergify.yml
index a82df6082b..7f77c57b73 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -10,30 +10,22 @@ queue_rules:
       - "#approved-reviews-by>1"
 
 pull_request_rules:
-  - name: Backport patches to the release/v4.3.x branch
+  - name: Backport patches to the release/v4.0.x branch
     conditions:
       - base=main
-      - label=A:backport/v4.3.x
+      - label=A:backport/v4.0.x
     actions:
       backport:
         branches:
-          - release/v4.3.x
-  - name: Backport patches to the release/v4.3.x-lsm branch
+          - release/v4.0.x
+  - name: Backport patches to the release/v4.5.x branch
     conditions:
       - base=main
-      - label=A:backport/v4.3.x-lsm
+      - label=A:backport/v4.5.x
     actions:
       backport:
         branches:
-          - release/v4.3.x-lsm
-  - name: Backport patches to the release/v4.4.x branch
-    conditions:
-      - base=main
-      - label=A:backport/v4.4.x
-    actions:
-      backport:
-        branches:
-          - release/v4.4.x
+          - release/v4.5.x
   - name: Backport patches to the release/v5.x branch
     conditions:
       - base=main