diff --git a/pyproject.toml b/pyproject.toml
index 0f501aa7..a8e6f427 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ dependencies = [
   "OpenEXR",
   "scikit-image",
   "trimesh",
-  "onnxruntime",
+  "onnxruntime==1.18.0",
 ]
 
 [project.optional-dependencies]