diff --git a/Cargo.toml b/Cargo.toml
index eddc185..3c987c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ crate-type = ["cdylib"]
 syntect = "4.5"
 
 [dependencies.pyo3]
-version = "0.15.1"
+version = "0.18.3"
 features = ["extension-module"]
 
 [package.metadata.maturin]