diff --git a/Cargo.toml b/Cargo.toml
index 83a265e..0431965 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ rustdoc-args = ["--cfg", "docrs", "--generate-link-to-definition"]
 [dependencies]
 serde = { version = "1.0.155", optional = true }
 serde_derive = { version = "1.0.155", optional = true }
-pyo3 = { version = "0.26.0", features = [
+pyo3 = { version = "0.27.0", features = [
     "multiple-pymethods",
 ], optional = true }
 num-traits = { version = "0.2.15", default-features = false, features = [