diff --git a/src/rust/Cargo.toml b/src/rust/Cargo.toml
index 01fba147e..9dd060f8b 100644
--- a/src/rust/Cargo.toml
+++ b/src/rust/Cargo.toml
@@ -9,7 +9,7 @@ rust-version = "1.56.0"
 
 [dependencies]
 once_cell = "1"
-pyo3 = { version = "0.18", features = ["abi3-py37"] }
+pyo3 = { version = "0.19", features = ["abi3-py37"] }
 asn1 = { version = "0.15.2", default-features = false }
 cryptography-cffi = { path = "cryptography-cffi" }
 cryptography-x509 = { path = "cryptography-x509" }