diff --git a/Cargo.toml b/Cargo.toml
index 01f6ac4..a3643a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ crate-type = ["cdylib"]
 
 [dependencies]
 calamine = { version = "0.31.0", features = ["chrono"] }
-pyo3 = { version = "0.26.0", features = [
+pyo3 = { version = "0.27.0", features = [
     "extension-module",
     "chrono",
     "generate-import-lib",