diff --git a/Cargo.toml b/Cargo.toml
index 6d2178f..527b0d3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ itertools = "0.14"
 num-traits = "0.2"
 chrono = "0.4"
 log = "0.4"
-pyo3 = { version = "0.27", features = [
+pyo3 = { version = "0.28", features = [
   "extension-module",
   "chrono",
 ], optional = true }