diff --git a/src/bedrock_agentcore/memory/session.py b/src/bedrock_agentcore/memory/session.py
index 6f8a81c6..63309437 100644
--- a/src/bedrock_agentcore/memory/session.py
+++ b/src/bedrock_agentcore/memory/session.py
@@ -408,7 +408,7 @@ def _retrieve_memories_for_llm(
                     memory_records = [
                         record
                         for record in memory_records
-                        if record.get("relevanceScore", config.relevance_score) >= config.relevance_score
+                        if record.get("score", config.relevance_score) >= config.relevance_score
                     ]
                 retrieved_memories.extend(memory_records)
 
diff --git a/tests/bedrock_agentcore/memory/models/test_models.py b/tests/bedrock_agentcore/memory/models/test_models.py
index a1e6b9e5..0a426c5d 100644
--- a/tests/bedrock_agentcore/memory/models/test_models.py
+++ b/tests/bedrock_agentcore/memory/models/test_models.py
@@ -132,7 +132,7 @@ def test_memory_record_initialization(self):
             "memoryRecordId": "record-123",
             "content": {"text": "This is a memory record"},
             "namespace": "user/preferences/",
-            "relevanceScore": 0.95,
+            "score": 0.95,
             "createdAt": "2023-01-01T00:00:00Z",
         }
         memory_record = MemoryRecord(data)
@@ -140,7 +140,7 @@ def test_memory_record_initialization(self):
         assert memory_record._data == data
         assert memory_record.memoryRecordId == "record-123"
         assert memory_record["content"]["text"] == "This is a memory record"
-        assert memory_record.get("relevanceScore") == 0.95
+        assert memory_record.get("score") == 0.95
 
     def test_memory_record_dict_access(self):
         """Test MemoryRecord dictionary-like access."""
diff --git a/tests/bedrock_agentcore/memory/test_session.py b/tests/bedrock_agentcore/memory/test_session.py
index a03a4a98..f9e0dde7 100644
--- a/tests/bedrock_agentcore/memory/test_session.py
+++ b/tests/bedrock_agentcore/memory/test_session.py
@@ -2881,9 +2881,9 @@ def test_process_turn_with_llm_with_relevance_score_filtering(self):
 
             # Mock search_long_term_memories to return records with different relevance scores
             mock_memories = [
-                {"content": {"text": "High relevance"}, "memoryRecordId": "rec-1", "relevanceScore": 0.8},
-                {"content": {"text": "Low relevance"}, "memoryRecordId": "rec-2", "relevanceScore": 0.2},
-                {"content": {"text": "Medium relevance"}, "memoryRecordId": "rec-3", "relevanceScore": 0.5},
+                {"content": {"text": "High relevance"}, "memoryRecordId": "rec-1", "score": 0.8},
+                {"content": {"text": "Low relevance"}, "memoryRecordId": "rec-2", "score": 0.2},
+                {"content": {"text": "Medium relevance"}, "memoryRecordId": "rec-3", "score": 0.5},
             ]
             with patch.object(manager, "search_long_term_memories", return_value=mock_memories):
                 # Mock add_turns