diff --git a/.github/workflows/guardrail_matching_pentester_cidr_blocks.yml b/.github/workflows/guardrail_matching_pentester_cidr_blocks.yml
index 5eab8c4a7..978b432b6 100644
--- a/.github/workflows/guardrail_matching_pentester_cidr_blocks.yml
+++ b/.github/workflows/guardrail_matching_pentester_cidr_blocks.yml
@@ -23,7 +23,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Install `hcl2json` with mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           install_args: hcl2json
 
diff --git a/.github/workflows/require-pinned-github-actions.yml b/.github/workflows/require-pinned-github-actions.yml
index 93c792277..0d1d436f7 100644
--- a/.github/workflows/require-pinned-github-actions.yml
+++ b/.github/workflows/require-pinned-github-actions.yml
@@ -14,6 +14,6 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Ensure SHA pinned actions
-        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@6124774845927d14c601359ab8138699fa5b70c3 # v4.0.1
+        uses: zgosalvez/github-actions-ensure-sha-pinned-actions@ca46236c6ce584ae24bc6283ba8dcf4b3ec8a066 # v5.0.4
         with:
           allowlist: alphagov/forms-deploy
diff --git a/.github/workflows/ruby-ci.yml b/.github/workflows/ruby-ci.yml
index 083e0cf0e..0e970afd8 100644
--- a/.github/workflows/ruby-ci.yml
+++ b/.github/workflows/ruby-ci.yml
@@ -25,7 +25,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Initialise mise and cache `hcl2json`
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           install_args: hcl2json
 
@@ -68,7 +68,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Set up hcl2json
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           install_args: hcl2json
 
diff --git a/.github/workflows/terraform-ci.yml b/.github/workflows/terraform-ci.yml
index ceec4d720..ff7398d78 100644
--- a/.github/workflows/terraform-ci.yml
+++ b/.github/workflows/terraform-ci.yml
@@ -23,7 +23,7 @@ jobs:
           fetch-depth: 75
 
       - name: Initialise mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           github_token: ${{ secrets.MISE_PAT }} # As this is a private repo, we can get API rate limit issues. Use a PAT to avoid this. (The token needs no special permissions.)
           install_args: go:github.com/hashicorp/terraform-config-inspect
@@ -136,7 +136,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Initialise mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           github_token: ${{ secrets.MISE_PAT }}
           install_args: terraform
@@ -159,7 +159,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Initialise mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           github_token: ${{ secrets.MISE_PAT }}
           install_args: terraform
@@ -184,7 +184,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Initialise mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           github_token: ${{ secrets.MISE_PAT }}
           install_args: tflint
@@ -217,7 +217,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Initialise mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           github_token: ${{ secrets.MISE_PAT }}
           install_args: checkov
diff --git a/.github/workflows/update-provider-locks.yml b/.github/workflows/update-provider-locks.yml
index bd13965de..b1f0946b8 100644
--- a/.github/workflows/update-provider-locks.yml
+++ b/.github/workflows/update-provider-locks.yml
@@ -22,7 +22,7 @@ jobs:
           ref: ${{ github.head_ref }}
 
       - name: Install `tfupdate` with mise
-        uses: jdx/mise-action@6d1e696aa24c1aa1bcc1adea0212707c71ab78a8 # v3.6.1
+        uses: jdx/mise-action@1648a7812b9aeae629881980618f079932869151 # v4.0.1
         with:
           install_args: tfupdate