diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6bed78b..dfb8e58 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -85,7 +85,7 @@ jobs:
         id: pinned
         uses: ./
         with:
-          mergify_cli_version: 2026.7.21.1
+          mergify_cli_version: 2026.10.8
 
       - name: Assert pinned install
         env:
@@ -95,7 +95,7 @@ jobs:
           # the input) so the assertion checks against a fixed expectation. The
           # name is mergify-specific so the Renovate customManager that bumps it
           # cannot collide with any other digit-led env added here later.
-          EXPECTED_MERGIFY_CLI_VERSION: 2026.7.21.1
+          EXPECTED_MERGIFY_CLI_VERSION: 2026.10.8
         run: |
           # Compare against the expected literal requested version (not the
           # action's own readback), so a regression that installs the wrong
diff --git a/README.md b/README.md
index 4410b23..4f5eefb 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ Pin a specific `mergify-cli` version, or install the latest one:
 
 | Input | Type | Required | Default | Description |
 | --- | --- | --- | --- | --- |
-| `mergify_cli_version` | string | false | `2026.7.21.1` | Version of mergify-cli to install. Use `latest` to install the latest released version without pinning. |
+| `mergify_cli_version` | string | false | `2026.10.8` | Version of mergify-cli to install. Use `latest` to install the latest released version without pinning. |
 
 <!-- AUTO-DOC-INPUT:END -->
 
diff --git a/action.yml b/action.yml
index e35cd6d..7114f3a 100644
--- a/action.yml
+++ b/action.yml
@@ -10,7 +10,7 @@ inputs:
       Version of mergify-cli to install. Use `latest` to install the latest
       released version without pinning.
     # renovate: datasource=github-releases depName=Mergifyio/mergify-cli versioning=pep440
-    default: 2026.7.21.1
+    default: 2026.10.8
 outputs:
   mergify_cli_version:
     description: |