diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 647408015a..404825428c 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -28,6 +28,26 @@ updates:
     labels:
       - dependencies
 
+  - package-ecosystem: gomod
+    directory: "/"
+    schedule:
+      interval: daily
+    target-branch: "release/v2.0.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/v2.1.x-lsm"
+    # Only allow automated security-related dependency updates on release branches.
+    open-pull-requests-limit: 0
+    labels:
+      - dependencies
+
   - package-ecosystem: gomod
     directory: "/"
     schedule:
diff --git a/.mergify.yml b/.mergify.yml
index e08625bf28..226075ed45 100644
--- a/.mergify.yml
+++ b/.mergify.yml
@@ -18,6 +18,22 @@ pull_request_rules:
       backport:
         branches:
           - release/v2.0.x
+  - name: Backport patches to the release/v2.0.x-lsm branch
+    conditions:
+      - base=main
+      - label=A:backport/v2.0.x-lsm
+    actions:
+      backport:
+        branches:
+          - release/v2.0.x-lsm
+  - name: Backport patches to the release/v2.1.x-lsm branch
+    conditions:
+      - base=main
+      - label=A:backport/v2.1.x-lsm
+    actions:
+      backport:
+        branches:
+          - release/v2.1.x-lsm
   - name: Backport patches to the release/v3.0.x branch
     conditions:
       - base=main