diff --git a/.github/workflows/test-build-number.yml b/.github/workflows/test-build-number.yml
index 9d499e21..e262e805 100644
--- a/.github/workflows/test-build-number.yml
+++ b/.github/workflows/test-build-number.yml
@@ -124,7 +124,7 @@ jobs:
       - uses: ./config-npm
       - uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
-          version: 2026.4.23
+          version: 2026.5.9
       - uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe # v1.2.2
         with:
           jobs: ${{ toJSON(needs) }}
diff --git a/.github/workflows/test-shell-scripts.yml b/.github/workflows/test-shell-scripts.yml
index f1336641..97391558 100644
--- a/.github/workflows/test-shell-scripts.yml
+++ b/.github/workflows/test-shell-scripts.yml
@@ -22,7 +22,7 @@ jobs:
       - uses: ./config-npm
       - uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3.6.3
         with:
-          version: 2026.4.23
+          version: 2026.5.9
       - name: Run ShellSpec tests
         # FIXME BUILD-8337: improve setup of kcov
         run: |
diff --git a/build-npm/action.yml b/build-npm/action.yml
index 62981342..79fe9061 100644
--- a/build-npm/action.yml
+++ b/build-npm/action.yml
@@ -123,7 +123,7 @@ runs:
 
     - uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3.6.3
       with:
-        version: 2026.4.23
+        version: 2026.5.9
 
     - uses: ./.actions/config-npm
       id: config
diff --git a/build-poetry/action.yml b/build-poetry/action.yml
index 1d9bdc6c..101d6c64 100644
--- a/build-poetry/action.yml
+++ b/build-poetry/action.yml
@@ -119,7 +119,7 @@ runs:
         restore-keys: poetry-${{ runner.os }}-
     - uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3.6.3
       with:
-        version: 2026.4.23
+        version: 2026.5.9
     - uses: SonarSource/vault-action-wrapper@c154b4a417b51cb98dd71137f49bf20e77c56820 # 3.4.0
       id: secrets
       # yamllint disable rule:line-length
diff --git a/build-yarn/action.yml b/build-yarn/action.yml
index 34303475..ed73cf8a 100644
--- a/build-yarn/action.yml
+++ b/build-yarn/action.yml
@@ -118,7 +118,7 @@ runs:
 
     - uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3.6.3
       with:
-        version: 2026.4.23
+        version: 2026.5.9
         working_directory: ${{ inputs.working-directory }}
 
     - name: Cache Yarn dependencies
diff --git a/promote/action.yml b/promote/action.yml
index 25abd457..6901c5e6 100644
--- a/promote/action.yml
+++ b/promote/action.yml
@@ -59,7 +59,7 @@ runs:
           development/github/token/{REPO_OWNER_NAME_DASH}-promotion token | GITHUB_TOKEN;
     - uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3.6.3
       with:
-        version: 2026.4.23
+        version: 2026.5.9
     - name: Promote artifacts
       shell: bash
       env: