diff --git a/.github/workflows/_update.yml b/.github/workflows/_update.yml
new file mode 100644
index 0000000..1080fe1
--- /dev/null
+++ b/.github/workflows/_update.yml
@@ -0,0 +1,64 @@
+---
+name: Update CSM rewards tree
+
+on:
+  workflow_call:
+    inputs:
+      branch:
+        description: branch to commit the changes
+        required: true
+        type: string
+      distributor:
+        description: CSFeeDistributor address
+        required: true
+        type: string
+
+permissions:
+  contents: write
+
+jobs:
+  script:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.branch }}
+
+      - name: Set up Python 3.12
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.12"
+
+      - name: Setup poetry
+        run: >
+          curl -sSL https://install.python-poetry.org | python - &&
+          echo "$POETRY_HOME/bin" >> "$GITHUB_PATH"
+        env:
+          POETRY_HOME: "/opt/poetry"
+          POETRY_VERSION: 1.8.3
+
+      - name: Install dependencies
+        run: poetry install --no-interaction
+
+      - name: Generate types
+        run: poetry run wake up pytypes
+
+      - name: Run script
+        run: poetry run wake run main.py
+        id: script
+        env:
+          RPC_URL: ${{ inputs.branch == 'testnet' && secrets.RPC_URL_HOLESKY || secrets.RPC_URL_MAINNET }}
+          GW3_ACCESS_KEY: ${{ secrets.GW3_ACCESS_KEY }}
+          GW3_SECRET_KEY: ${{ secrets.GW3_SECRET_KEY }}
+          DISTRIBUTOR_ADDRESS: ${{ inputs.distributor }}
+
+      - name: Commit new artifacts
+        if: ${{ steps.script.outputs.updated == 'True' }}
+        run: |
+          git config --global user.name "madlabman"
+          git config --global user.email "10616301+madlabman@users.noreply.github.com"
+          git add "*.json"
+          git commit -m "chore: update tree and proofs" -m "CID: ${{ steps.script.outputs.cid }}"
+          git fetch origin
+          git rebase --strategy-option=ours "origin/${{ inputs.branch }}"
+          git push
diff --git a/.github/workflows/action.yml b/.github/workflows/action.yml
new file mode 100644
index 0000000..7500caf
--- /dev/null
+++ b/.github/workflows/action.yml
@@ -0,0 +1,18 @@
+---
+name: Automated update
+
+on:
+  schedule:
+    - cron: "0 */1 * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  testnet:
+    uses: ./.github/workflows/_update.yml
+    with:
+      branch: testnet
+      distributor: "0xD7ba648C8F72669C6aE649648B516ec03D07c8ED"
+    secrets: inherit
diff --git a/README.md b/README.md
index de5cd36..6e5c0f6 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
-**Latest [proofs](./proofs.json)**
+If you're a Node Operator in CSM, you get staking rewards as a part of Lido
+protocol fees.
 
-**Latest [tree](./tree.json)**
+The allocation of rewards for CSM operators using a Merkle tree is provided by
+CSM Performance Oracle once in a frame, making a new portion of the rewards
+available for claim.
+
+Here you can find the latest [rewards tree](./tree.json) as well as the
+pre-generated [proofs](./proofs.json) for your convenience.
diff --git a/main.py b/main.py
index a579045..db8b1d1 100644
--- a/main.py
+++ b/main.py
@@ -1,5 +1,6 @@
 import json
 import os
+import subprocess
 import sys
 
 from wake.deployment import Address, default_chain, print
@@ -37,7 +38,7 @@ def main():
 
     proofs = {
         f"CSM Operator {v["value"][0]}": {
-            "leaf": tree.leaf(v["value"]),
+            "cumulativeFeeShares": v["value"][1],
             "proof": list(tree.get_proof(v["treeIndex"])),
         }
         for v in dump["values"]
@@ -46,6 +47,23 @@ def main():
     with open("proofs.json", "w", encoding="utf-8") as fp:
         json.dump(proofs, fp, indent=2, default=default)
 
+    github_output = os.getenv("GITHUB_OUTPUT", None)
+    if not github_output:
+        return
+
+    git_diff = subprocess.run(["git", "diff", "--exit-code", "--quiet", "tree.json"])
+
+    with open(github_output, "a", encoding="utf-8") as fp:
+        fp.write(
+            "\n".join(
+                [
+                    "",
+                    f"cid={cid}",
+                    f"updated={git_diff.returncode != 0}",
+                ]
+            )
+        )
+
 
 def default(o):
     if isinstance(o, bytes):
diff --git a/proofs.json b/proofs.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/proofs.json
@@ -0,0 +1 @@
+{}
diff --git a/tree.json b/tree.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/tree.json
@@ -0,0 +1 @@
+{}