diff --git a/pyproject.toml b/pyproject.toml
index db353b32..18f508ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,6 +17,9 @@ onnxruntime = "^1.17.0"
 onnxruntime-gpu = [
     { version = "^1.17.0", optional = true, python = "<3.13" }
 ]
+onnxruntime-silicon = [
+    { version = "^1.16.3", optional = true, python = "<3.13" }
+]
 tqdm = "^4.66"
 requests = "^2.31"
 tokenizers = "^0.15.1"