diff --git a/vector-stores/spring-ai-qdrant-store/src/main/java/org/springframework/ai/vectorstore/qdrant/QdrantValueFactory.java b/vector-stores/spring-ai-qdrant-store/src/main/java/org/springframework/ai/vectorstore/qdrant/QdrantValueFactory.java
index b328f418985..c062e1f6cae 100644
--- a/vector-stores/spring-ai-qdrant-store/src/main/java/org/springframework/ai/vectorstore/qdrant/QdrantValueFactory.java
+++ b/vector-stores/spring-ai-qdrant-store/src/main/java/org/springframework/ai/vectorstore/qdrant/QdrantValueFactory.java
@@ -75,6 +75,9 @@ private static Value value(Object value) {
 				return ValueFactory.value((String) value);
 			case "Integer":
 				return ValueFactory.value((Integer) value);
+			case "Long":
+				// use String representation
+				return ValueFactory.value(String.valueOf(value));
 			case "Double":
 				return ValueFactory.value((Double) value);
 			case "Float":
diff --git a/vector-stores/spring-ai-qdrant-store/src/test/java/org/springframework/ai/vectorstore/qdrant/QdrantVectorStoreIT.java b/vector-stores/spring-ai-qdrant-store/src/test/java/org/springframework/ai/vectorstore/qdrant/QdrantVectorStoreIT.java
index 004bf32d226..b2af2ab758c 100644
--- a/vector-stores/spring-ai-qdrant-store/src/test/java/org/springframework/ai/vectorstore/qdrant/QdrantVectorStoreIT.java
+++ b/vector-stores/spring-ai-qdrant-store/src/test/java/org/springframework/ai/vectorstore/qdrant/QdrantVectorStoreIT.java
@@ -314,6 +314,27 @@ void getNativeClientTest() {
 		});
 	}
 
+	@Test
+	void shouldConvertLongToString() {
+		this.contextRunner.run(context -> {
+			QdrantVectorStore vectorStore = context.getBean(QdrantVectorStore.class);
+			var refId = System.currentTimeMillis();
+			var doc = new Document("Long type ref_id", Map.of("ref_id", refId));
+			vectorStore.add(List.of(doc));
+
+			List<Document> results = vectorStore
+				.similaritySearch(SearchRequest.builder().query("Long type ref_id").topK(1).build());
+			assertThat(results).hasSize(1);
+			Document resultDoc = results.get(0);
+			var resultRefId = resultDoc.getMetadata().get("ref_id");
+			assertThat(resultRefId).isInstanceOf(String.class);
+			assertThat(Double.valueOf((String) resultRefId)).isEqualTo(refId);
+
+			// Remove all documents from the store
+			vectorStore.delete(List.of(resultDoc.getId()));
+		});
+	}
+
 	@SpringBootConfiguration
 	public static class TestApplication {