diff --git a/requirements.txt b/requirements.txt
index 3949017..1db1c00 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,3 +24,4 @@ sentencepiece>=0.1.99
 pytest>=7.0.0
 pytest-mock>=3.10.0
 pytest-cov>=4.0.0
+gguf>=0.6.0
diff --git a/tests/test_service.py b/tests/test_service.py
index 3fef3c3..fcb8cf5 100644
--- a/tests/test_service.py
+++ b/tests/test_service.py
@@ -37,7 +37,7 @@ def test_generate_aibom_basic(self, mock_extractor_cls, mock_score):
     def test_generate_aibom_purl_encoding(self, mock_extractor_cls, mock_score):
         # Setup
         mock_extractor = mock_extractor_cls.return_value
-        mock_extractor.extract_metadata.return_value = {"name": "test-model", "author": "tester"}
+        mock_extractor.extract_metadata.return_value = {"name": "test-model", "author": "tester", "commit": "123456"}
         mock_extractor.extraction_results = {}
         mock_score.return_value = {"total_score": 50}
         
@@ -48,16 +48,12 @@ def test_generate_aibom_purl_encoding(self, mock_extractor_cls, mock_score):
         aibom = self.service.generate_aibom(model_id)
         
         # Verify PURL encoding (slash should be / now, case preserved)
-        # Expected: pkg:huggingface/owner/model@12345678 (truncated hash)
-        
-        # Check components section (ML model)
+        # Expected: pkg:huggingface/owner/model@123456
         ml_cmp = aibom["components"][0]
+        
+        self.assertEqual(ml_cmp["version"], "123456")
+        self.assertIn("pkg:huggingface/owner/model@123456", ml_cmp["purl"])
         self.assertIn("pkg:huggingface/owner/model@123456", ml_cmp["bom-ref"])
-        self.assertEqual(ml_cmp["purl"], ml_cmp["bom-ref"])
-
-        # Check dependency links use matching purls
-        self.assertIn("pkg:generic/owner/model@123456", aibom["dependencies"][0]["ref"])
-        self.assertIn("pkg:huggingface/owner/model@123456", aibom["dependencies"][0]["dependsOn"][0])
         
     @patch("src.models.service.calculate_completeness_score")
     @patch("src.models.service.EnhancedExtractor")