diff --git a/.github/workflows/boj-build.yml b/.github/workflows/boj-build.yml
index 610a8d6..e9b7b17 100644
--- a/.github/workflows/boj-build.yml
+++ b/.github/workflows/boj-build.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Trigger BoJ Server (Casket/ssg-mcp)
         run: |
           # Send a secure trigger to boj-server to build this repository
diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 90247d2..7999164 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -83,7 +83,7 @@ jobs:
           limit-severities-for-sarif: true
 
       - name: Upload Trivy results to GitHub Security
-        uses: github/codeql-action/upload-sarif@0d579ffd059c29b07949a3cce3983f0780820c98 # v3.28.1
+        uses: github/codeql-action/upload-sarif@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3.28.1
         if: always() && hashFiles('trivy-results.sarif') != ''
         with:
           sarif_file: 'trivy-results.sarif'
@@ -147,7 +147,7 @@ jobs:
           directories: src/julia/RobotVacuum/src
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.0.7
+        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5.0.7
         with:
           files: lcov.info
           flags: julia-${{ matrix.julia-version }}
@@ -165,7 +165,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Install Rust toolchain
-        uses: actions-rust-lang/setup-rust-toolchain@a0b538fa0b742a6aa35d6e2c169b4bd06d225a98 # v1.15.3
+        uses: actions-rust-lang/setup-rust-toolchain@150fca883cd4034361b621bd4e6a9d34e5143606 # v1.15.4
         with:
           toolchain: ${{ env.RUST_VERSION }}
           components: rustfmt, clippy
@@ -192,7 +192,7 @@ jobs:
         continue-on-error: true
 
       - name: Upload Rust coverage
-        uses: codecov/codecov-action@671740ac38dd9b0130fbe1cec585b89eea48d3de # v5.0.7
+        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5.0.7
         with:
           file: src/rust/coverage/cobertura.xml
           flags: rust
@@ -260,7 +260,7 @@ jobs:
           limit-severities-for-sarif: true
 
       - name: Upload Trivy image results
-        uses: github/codeql-action/upload-sarif@0d579ffd059c29b07949a3cce3983f0780820c98 # v3.28.1
+        uses: github/codeql-action/upload-sarif@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3.28.1
         if: always() && hashFiles('trivy-image-results.sarif') != ''
         with:
           sarif_file: 'trivy-image-results.sarif'
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 46f4143..70054dd 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -70,7 +70,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@0d579ffd059c29b07949a3cce3983f0780820c98 # v3.28.1
+      uses: github/codeql-action/init@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3.28.1
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -99,6 +99,6 @@ jobs:
         exit 1
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@0d579ffd059c29b07949a3cce3983f0780820c98 # v3.28.1
+      uses: github/codeql-action/analyze@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3.28.1
       with:
         category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index 9f3b3b5..83dac78 100644
--- a/.github/workflows/hypatia-scan.yml
+++ b/.github/workflows/hypatia-scan.yml
@@ -25,7 +25,7 @@ jobs:
           fetch-depth: 0  # Full history for better pattern analysis
 
       - name: Setup Elixir for Hypatia scanner
-        uses: erlef/setup-beam@9d5b75ddfda22fb979d2270283237aef8aa68d6b # v1.18.2
+        uses: erlef/setup-beam@ee09b1e59bb240681c382eb1f0abc6a04af72764 # v1.18.2
         with:
           elixir-version: '1.19.4'
           otp-version: '28.3'
diff --git a/.github/workflows/scorecard-enforcer.yml b/.github/workflows/scorecard-enforcer.yml
index 4ad1f3b..24753d0 100644
--- a/.github/workflows/scorecard-enforcer.yml
+++ b/.github/workflows/scorecard-enforcer.yml
@@ -30,7 +30,7 @@ jobs:
           publish_results: true
 
       - name: Upload SARIF
-        uses: github/codeql-action/upload-sarif@0d579ffd059c29b07949a3cce3983f0780820c98 # v3
+        uses: github/codeql-action/upload-sarif@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3
         with:
           sarif_file: results.sarif
 
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 3c55e1c..98cd21c 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -26,6 +26,6 @@ jobs:
           results_format: sarif
       
       - name: Upload results
-        uses: github/codeql-action/upload-sarif@0d579ffd059c29b07949a3cce3983f0780820c98 # v3.28.1
+        uses: github/codeql-action/upload-sarif@b1bff81932f5cdfc8695c7752dcee935dcd061c8 # v3.28.1
         with:
           sarif_file: results.sarif