diff --git a/.github/workflows/osv-scanner.yml b/.github/workflows/osv-scanner.yml
index 4d36085..09dbd66 100644
--- a/.github/workflows/osv-scanner.yml
+++ b/.github/workflows/osv-scanner.yml
@@ -24,119 +24,101 @@ permissions:
 jobs:
   osv-scan:
     runs-on: ubuntu-latest
-    
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
-      
-      - name: Prepare requirements for scanning
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install system dependencies for pyscard
+        run: sudo apt-get install -y libpcsclite-dev swig
+
+      - name: Install dependencies and resolve exact versions
         run: |
-          # Use Python to safely read files with correct encoding (handling BOMs automatically)
+          python -m pip install --upgrade pip
+
+          # Read requirements files handling UTF-16 BOM encoding
           python3 -c "
           import sys
-          
+
           def process_file(filename):
               try:
-                  # Open with utf-8-sig to handle UTF-8 BOM, errors='replace' to handle binary/UTF-16 confusion
-                  # Ideally we would detect encoding, but requirements files should be text
                   with open(filename, 'r', encoding='utf-8', errors='replace') as f:
                       content = f.read()
-                      # If it looks like UTF-16 (null bytes), try re-reading
-                      if '\x00' in content:
-                          with open(filename, 'r', encoding='utf-16') as f2:
-                              content = f2.read()
-                  
+                  if '\x00' in content:
+                      with open(filename, 'r', encoding='utf-16') as f2:
+                          content = f2.read()
+                  lines = []
                   for line in content.splitlines():
                       line = line.strip()
                       if not line or line.startswith(('#', '-i', '--')):
                           continue
-                      # Remove markers
-                      line = line.split(';')[0].strip()
-                      if line:
-                          print(line)
+                      lines.append(line)
+                  return lines
               except Exception as e:
                   print(f'Error processing {filename}: {e}', file=sys.stderr)
-          
-          process_file('requirements.txt')
-          process_file('dev-requirements.txt')
-          " | sort -u > combined-requirements.txt
-          
-          echo "Combined requirements file created:"
-          if [ -s combined-requirements.txt ]; then
-            echo "  Total packages: $(wc -l < combined-requirements.txt)"
-            echo ""
-            echo "Package list (first 10):"
-            head -10 combined-requirements.txt
-          else
-             echo "Error: combined-requirements.txt is empty!"
-             echo "Debug: File listing:"
-             ls -l requirements.txt dev-requirements.txt
-          fi
-          echo ""
-      
+                  return []
+
+          lines = process_file('requirements.txt') + process_file('dev-requirements.txt')
+          for line in lines:
+              print(line)
+          " > combined-requirements.txt
+
+          echo "Installing packages to resolve exact versions..."
+          pip install -r combined-requirements.txt --quiet
+
+          echo "Generating resolved lockfile from installed packages..."
+          pip freeze > installed-requirements.txt
+
+          echo "Resolved packages (first 10):"
+          head -10 installed-requirements.txt
+          echo "Total: $(wc -l < installed-requirements.txt) packages"
+
       - name: Install OSV-Scanner
         run: |
-          curl -LO https://github.com/google/osv-scanner/releases/latest/download/osv-scanner_linux_amd64
+          OSV_VERSION="v2.3.5"
+          curl -LO https://github.com/google/osv-scanner/releases/download/${OSV_VERSION}/osv-scanner_linux_amd64
           chmod +x osv-scanner_linux_amd64
           sudo mv osv-scanner_linux_amd64 /usr/local/bin/osv-scanner
-      
+
       - name: Run OSV-Scanner
         id: osv-scanner
         continue-on-error: true
         run: |
-          echo "Running OSV-Scanner dependency vulnerability check..."
+          echo "Running OSV-Scanner on resolved installed versions..."
           echo "=================================================="
           echo ""
-          
-          # Check if combined file has content
-          if [ ! -s combined-requirements.txt ]; then
-            echo "Error: combined-requirements.txt is empty!"
-            echo "Falling back to scanning requirements.txt only..."
-            LOCKFILE="requirements.txt"
-          else
-            LOCKFILE="combined-requirements.txt"
-          fi
-          
-          echo "Scanning: $LOCKFILE"
-          echo ""
-          
-          # Run scan and capture exit code
+
           set +e
-          osv-scanner --lockfile="$LOCKFILE"
+          osv-scanner --lockfile=installed-requirements.txt
           SCAN_EXIT_CODE=$?
           set -e
-          
-          # Exit code 128 means no packages found, which should not happen
-          if [ $SCAN_EXIT_CODE -eq 128 ]; then
-            echo ""
-            echo "OSV-Scanner found no packages to scan"
-            echo "Debug: Contents of $LOCKFILE:"
-            cat "$LOCKFILE"
-            exit 1
-          fi
-          
+
           echo ""
           echo "Generating SARIF report..."
-          osv-scanner --lockfile="$LOCKFILE" --format=sarif --output=results.sarif 2>&1 || {
-            echo "⚠️  SARIF generation encountered issues (possibly plugin warning)"
+          osv-scanner --lockfile=installed-requirements.txt --format=sarif --output=results.sarif 2>&1 || {
+            echo "⚠️  SARIF generation encountered issues"
             echo "    Scan results are still valid - see output above"
           }
-          
+
           if [ -f results.sarif ] && [ -s results.sarif ]; then
             echo "✓ SARIF file created successfully"
             ls -lh results.sarif
           fi
-          
-          # Return the original scan exit code
+
           exit $SCAN_EXIT_CODE
-      
+
       - name: Upload SARIF results to GitHub Security
         if: always() && hashFiles('results.sarif') != ''
         uses: github/codeql-action/upload-sarif@v4
         with:
           sarif_file: results.sarif
           category: osv-scanner
-      
+
       - name: Success - No vulnerabilities found
         if: steps.osv-scanner.outcome == 'success'
         run: |
@@ -147,7 +129,7 @@ jobs:
           echo "All Python dependencies (requirements.txt + dev-requirements.txt)"
           echo "are free of known vulnerabilities."
           echo ""
-      
+
       - name: Check OSV-Scanner results
         if: steps.osv-scanner.outcome == 'failure'
         run: |
diff --git a/dev-requirements.txt b/dev-requirements.txt
index f8f6aa4..4092399 100644
Binary files a/dev-requirements.txt and b/dev-requirements.txt differ
diff --git a/requirements.txt b/requirements.txt
index 6dbe636..c86b8d9 100644
Binary files a/requirements.txt and b/requirements.txt differ