diff --git a/pyproject.toml b/pyproject.toml
index 030656c..37a9c2b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ huggingface = [
 
 llama = [
     "protobuf",
-    "sentencepiece~=0.1.99",
+    "sentencepiece>=0.1.99,<1.0.0",
 ]
 
 cpp = [