diff --git a/shaperglot-py/Cargo.toml b/shaperglot-py/Cargo.toml
index 7b1b80f..ac53bbc 100644
--- a/shaperglot-py/Cargo.toml
+++ b/shaperglot-py/Cargo.toml
@@ -10,5 +10,5 @@ crate-type = ["cdylib"]
 
 [dependencies]
 shaperglot = { path = "../shaperglot-lib" }
-pyo3 = "0.22"
+pyo3 = "0.23.4"
 pythonize = "0.22.0"