diff --git a/.github/workflows/casket-pages.yml b/.github/workflows/casket-pages.yml
index e052667..e2f5ad5 100644
--- a/.github/workflows/casket-pages.yml
+++ b/.github/workflows/casket-pages.yml
@@ -31,7 +31,7 @@ jobs:
           path: .casket-ssg
 
       - name: Setup GHCup
-        uses: haskell-actions/setup@cd0d9bdd65b20557f41bea4dbe43d0b5fbbfe553 # v2
+        uses: haskell-actions/setup@6037f33647c3f17758a2356c80fc4a53d7e0685d # v2
         with:
           ghc-version: '9.8.2'
           cabal-version: '3.10'
diff --git a/.github/workflows/cflite_batch.yml b/.github/workflows/cflite_batch.yml
index 47ac11c..b8fa969 100644
--- a/.github/workflows/cflite_batch.yml
+++ b/.github/workflows/cflite_batch.yml
@@ -51,7 +51,7 @@ jobs:
 
       - name: Upload SARIF (if crashes found)
         if: always() && steps.run.outputs.sarif-output != ''
-        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4
+        uses: github/codeql-action/upload-sarif@5595ccaf912efad79be6eef63a5619ff05969be3 # v4
         with:
           sarif_file: ${{ steps.run.outputs.sarif-output }}
           category: clusterfuzzlite-batch-${{ matrix.sanitizer }}
diff --git a/.github/workflows/cflite_pr.yml b/.github/workflows/cflite_pr.yml
index 5f2a453..bdf73cf 100644
--- a/.github/workflows/cflite_pr.yml
+++ b/.github/workflows/cflite_pr.yml
@@ -50,7 +50,7 @@ jobs:
 
       - name: Upload SARIF (if crashes found)
         if: always() && steps.run.outputs.sarif-output != ''
-        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4
+        uses: github/codeql-action/upload-sarif@5595ccaf912efad79be6eef63a5619ff05969be3 # v4
         with:
           sarif_file: ${{ steps.run.outputs.sarif-output }}
           category: clusterfuzzlite-${{ matrix.sanitizer }}
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 37f857d..65c15f3 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -48,12 +48,12 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v3
+        uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v3
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v3
+        uses: github/codeql-action/analyze@5595ccaf912efad79be6eef63a5619ff05969be3 # v3
         with:
           category: "/language:${{ matrix.language }}"
diff --git a/.github/workflows/echidna-validation.yml b/.github/workflows/echidna-validation.yml
index d6273b9..7d93e41 100644
--- a/.github/workflows/echidna-validation.yml
+++ b/.github/workflows/echidna-validation.yml
@@ -40,7 +40,7 @@ jobs:
           components: rustfmt, clippy
 
       - name: Cache Rust dependencies
-        uses: Swatinem/rust-cache@9f151aca7c3990bab7afe2d82ac58088d3b01074  # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6  # v2
         with:
           workspaces: impl/rust-cli
 
@@ -87,7 +87,7 @@ jobs:
         uses: dtolnay/rust-toolchain@4be9e76fd7c4901c61fb841f559994984270fce7  # stable
 
       - name: Cache Rust dependencies
-        uses: Swatinem/rust-cache@9f151aca7c3990bab7afe2d82ac58088d3b01074  # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6  # v2
         with:
           workspaces: impl/rust-cli
 
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index 1e94274..1fceddd 100644
--- a/.github/workflows/hypatia-scan.yml
+++ b/.github/workflows/hypatia-scan.yml
@@ -243,7 +243,7 @@ jobs:
           always() &&
           (github.event_name != 'pull_request' ||
            github.event.pull_request.head.repo.fork != true)
-        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v3.28.1
+        uses: github/codeql-action/upload-sarif@5595ccaf912efad79be6eef63a5619ff05969be3 # v3.28.1
         with:
           sarif_file: hypatia.sarif
           # Distinct category so Hypatia results coexist with CodeQL's
diff --git a/.github/workflows/lean-verification.yml b/.github/workflows/lean-verification.yml
index da02968..035123f 100644
--- a/.github/workflows/lean-verification.yml
+++ b/.github/workflows/lean-verification.yml
@@ -90,7 +90,7 @@ jobs:
           nm -D impl/ocaml/liblean_vsh.so | grep vsh_safe || echo "Warning: vsh_safe functions not exported"
 
       - name: Cache Rust build
-        uses: Swatinem/rust-cache@9f151aca7c3990bab7afe2d82ac58088d3b01074  # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6  # v2
         with:
           workspaces: impl/rust-cli
 
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index 23e8281..6c89e20 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Send push notification email
-        uses: dawidd6/action-send-mail@12335b969ae3fb71bee5f2c6b829744261aec34c # pinned
+        uses: dawidd6/action-send-mail@8de3c312702ac7a63fc4035d45a2a51811eb669a # pinned
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}
diff --git a/.github/workflows/rust-cli.yml b/.github/workflows/rust-cli.yml
index 5b671d7..2a92ac7 100644
--- a/.github/workflows/rust-cli.yml
+++ b/.github/workflows/rust-cli.yml
@@ -31,7 +31,7 @@ jobs:
           components: rustfmt, clippy
 
       - name: Cache Rust dependencies
-        uses: Swatinem/rust-cache@9f151aca7c3990bab7afe2d82ac58088d3b01074  # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6  # v2
         with:
           workspaces: impl/rust-cli
 
@@ -110,7 +110,7 @@ jobs:
           components: llvm-tools-preview
 
       - name: Cache Rust dependencies
-        uses: Swatinem/rust-cache@9f151aca7c3990bab7afe2d82ac58088d3b01074  # v2
+        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6  # v2
         with:
           workspaces: impl/rust-cli