diff --git a/Cargo.toml b/Cargo.toml
index 64dba9a..5805942 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "foobar"
 version = "0.1.0"
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
@@ -9,7 +9,7 @@ name = "foobar"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.23.5", features = ["extension-module"] }
+pyo3 = { version = "0.27.1", features = ["extension-module"] }
 
 [package.metadata.maturin]
 python-source = "python"