diff --git a/.github/actions/setup/action.yaml b/.github/actions/setup/action.yaml
index 3b351437d..e6a0cd71f 100644
--- a/.github/actions/setup/action.yaml
+++ b/.github/actions/setup/action.yaml
@@ -13,7 +13,7 @@ runs:
   steps:
     - name: Install mise
       env:
-        MISE_VERSION: 2026.8.8 # renovate: datasource=github-releases packageName=jdx/mise
+        MISE_VERSION: 2026.9.1 # renovate: datasource=github-releases packageName=jdx/mise
       uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
       with:
         version: ${{ env.MISE_VERSION }}
diff --git a/.github/workflows/check-private-leak.yaml b/.github/workflows/check-private-leak.yaml
index 488670a63..72aa1bf94 100644
--- a/.github/workflows/check-private-leak.yaml
+++ b/.github/workflows/check-private-leak.yaml
@@ -67,7 +67,7 @@ jobs:
       # actions/cache step entirely so a PR workflow cannot poison the store.
       - name: 📦 Install mise (node + pnpm)
         env:
-          MISE_VERSION: 2026.8.8 # renovate: datasource=github-releases packageName=jdx/mise
+          MISE_VERSION: 2026.9.1 # renovate: datasource=github-releases packageName=jdx/mise
         uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
         with:
           version: ${{ env.MISE_VERSION }}