diff --git a/pyproject.toml b/pyproject.toml
index 53c1f426..18908ade 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ dependencies = [
     "aioserial",
     "numpy",
     "pydantic",
-    "pvi~=0.8.1",
+    "pvi>=0.8.1,<0.10.0",
     "softioc",
 ]
 dynamic = ["version"]