diff --git a/libs/langchain/langchain/vectorstores/qdrant.py b/libs/langchain/langchain/vectorstores/qdrant.py
index b364c991539..b85edabcdc2 100644
--- a/libs/langchain/langchain/vectorstores/qdrant.py
+++ b/libs/langchain/langchain/vectorstores/qdrant.py
@@ -1837,6 +1837,11 @@ class Qdrant(VectorStore):
         )
         return qdrant
 
+    @staticmethod
+    def _cosine_relevance_score_fn(distance: float) -> float:
+        """Normalize the distance to a score on a scale [0, 1]."""
+        return (distance + 1.0) / 2.0
+
     def _select_relevance_score_fn(self) -> Callable[[float], float]:
         """
         The 'correct' relevance function