diff --git a/paperqa/docs.py b/paperqa/docs.py
index 7c13098dd..545920708 100644
--- a/paperqa/docs.py
+++ b/paperqa/docs.py
@@ -513,7 +513,7 @@ async def _build_texts_index(self, embedding_model: EmbeddingModel) -> None:
                 strict=True,
             ):
                 t.embedding = t_embedding
-        self.texts_index.add_texts_and_embeddings(texts)
+        await self.texts_index.add_texts_and_embeddings(texts)
 
     async def retrieve_texts(
         self,
diff --git a/paperqa/llms.py b/paperqa/llms.py
index 92083601a..ca1b97b22 100644
--- a/paperqa/llms.py
+++ b/paperqa/llms.py
@@ -72,7 +72,8 @@ def __len__(self) -> int:
         return len(self.texts_hashes)
 
     @abstractmethod
-    def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
+    async def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
+        """Add texts and their embeddings to the store."""
         self.texts_hashes.update(hash(t) for t in texts)
 
     @abstractmethod
@@ -198,8 +199,8 @@ def clear(self) -> None:
         self._embeddings_matrix = None
         self._texts_filter = None
 
-    def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
-        super().add_texts_and_embeddings(texts)
+    async def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
+        await super().add_texts_and_embeddings(texts)
         self.texts.extend(texts)
         self._embeddings_matrix = np.array([t.embedding for t in self.texts])
 
@@ -328,8 +329,8 @@ def clear(self) -> None:
         )
         self._point_ids = None
 
-    def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
-        super().add_texts_and_embeddings(texts)
+    async def add_texts_and_embeddings(self, texts: Iterable[Embeddable]) -> None:
+        await super().add_texts_and_embeddings(texts)
 
         texts_list = list(texts)