diff --git a/.github/workflows/casket-pages.yml b/.github/workflows/casket-pages.yml
index 3b1b242f..438f7940 100644
--- a/.github/workflows/casket-pages.yml
+++ b/.github/workflows/casket-pages.yml
@@ -32,7 +32,7 @@ jobs:
           path: .casket-ssg
 
       - name: Setup GHCup
-        uses: haskell-actions/setup@cd0d9bdd65b20557f41bea4dbe43d0b5fbbfe553 # v2.11.0
+        uses: haskell-actions/setup@6037f33647c3f17758a2356c80fc4a53d7e0685d # v2.12.0
         with:
           ghc-version: '9.8.2'
           cabal-version: '3.10'
diff --git a/.github/workflows/codeql-reusable.yml b/.github/workflows/codeql-reusable.yml
index acda07d7..325990b4 100644
--- a/.github/workflows/codeql-reusable.yml
+++ b/.github/workflows/codeql-reusable.yml
@@ -91,12 +91,12 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@f205ea1c3313d32999d8d6a48b4f6530d4437b38 # v3
+        uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v3
         with:
           languages: ${{ inputs.language }}
           build-mode: ${{ inputs.build-mode }}
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@f205ea1c3313d32999d8d6a48b4f6530d4437b38 # v3
+        uses: github/codeql-action/analyze@5595ccaf912efad79be6eef63a5619ff05969be3 # v3
         with:
           category: "/language:${{ inputs.language }}"
diff --git a/.github/workflows/hypatia-scan-reusable.yml b/.github/workflows/hypatia-scan-reusable.yml
index 0edaa8cd..33eea4dd 100644
--- a/.github/workflows/hypatia-scan-reusable.yml
+++ b/.github/workflows/hypatia-scan-reusable.yml
@@ -196,7 +196,7 @@ jobs:
         # This flag only tolerates a genuine upload failure (e.g. Advanced
         # Security disabled on a private repo) once the job is actually running.
         continue-on-error: true
-        uses: github/codeql-action/upload-sarif@f205ea1c3313d32999d8d6a48b4f6530d4437b38 # v3
+        uses: github/codeql-action/upload-sarif@5595ccaf912efad79be6eef63a5619ff05969be3 # v3
         with:
           sarif_file: hypatia.sarif
           category: hypatia
diff --git a/.github/workflows/mirror-reusable.yml b/.github/workflows/mirror-reusable.yml
index 6f894538..1ccafb23 100644
--- a/.github/workflows/mirror-reusable.yml
+++ b/.github/workflows/mirror-reusable.yml
@@ -245,7 +245,7 @@ jobs:
       # answers "are we configured to actually do it?".
       - name: Setup Rust
         if: ${{ env.RADICLE_KEY != '' }}
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # stable
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # stable
         with:
           toolchain: stable
       - name: Install Radicle
diff --git a/.github/workflows/rust-ci-reusable.yml b/.github/workflows/rust-ci-reusable.yml
index 1daa6ed1..125481e1 100644
--- a/.github/workflows/rust-ci-reusable.yml
+++ b/.github/workflows/rust-ci-reusable.yml
@@ -166,13 +166,13 @@ jobs:
         # `@stable`), but a SHA ref carries no version, so the action's "parse
         # toolchain version" step fails with `'toolchain' is a required input`.
         # See standards estate-wide rust-ci red.
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # stable
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # stable
         with:
           toolchain: stable
           components: clippy, rustfmt
 
       - name: Cache cargo registry and build
-        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2
         with:
           workspaces: ${{ inputs.working_directory }}
 
@@ -209,12 +209,12 @@ jobs:
 
       - name: Install Rust toolchain
         # `toolchain:` mandatory under SHA pin — see Cargo check job above.
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # stable
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # stable
         with:
           toolchain: stable
 
       - name: Cache cargo registry and build
-        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2
         with:
           workspaces: ${{ inputs.working_directory }}
 
@@ -252,7 +252,7 @@ jobs:
 
       - name: Install Rust toolchain
         # `toolchain:` mandatory under SHA pin — see Cargo check job above.
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # stable
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # stable
         with:
           toolchain: stable
 
@@ -288,7 +288,7 @@ jobs:
 
       - name: Install Rust toolchain
         # `toolchain:` mandatory under SHA pin — see Cargo check job above.
-        uses: dtolnay/rust-toolchain@2c7215f132e9ebf062739d9130488b56d53c060c # stable
+        uses: dtolnay/rust-toolchain@6c977a6ca4077a0ceb28ffbe03f59d46e9ac8772 # stable
         with:
           toolchain: stable
           components: llvm-tools-preview