diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 66fe332..081501e 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -86,7 +86,7 @@ dependencies = [
 [[package]]
 name = "cryptography-x509"
 version = "0.1.0"
-source = "git+https://github.com/pyca/cryptography.git#cb5ad845146af67ddeda1ce8fdf00e1755f86a82"
+source = "git+https://github.com/pyca/cryptography.git#2f3daa894e621216bd9ab0057a0d56945dcb969e"
 dependencies = [
  "asn1",
 ]
@@ -246,9 +246,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.22.3"
+version = "0.22.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15ee168e30649f7f234c3d49ef5a7a6cbf5134289bc46c29ff3155fa3221c225"
+checksum = "00e89ce2565d6044ca31a3eb79a334c3a79a841120a98f64eea9f579564cb691"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -264,9 +264,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.22.3"
+version = "0.22.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e61cef80755fe9e46bb8a0b8f20752ca7676dcc07a5277d8b7768c6172e529b3"
+checksum = "d8afbaf3abd7325e08f35ffb8deb5892046fcb2608b703db6a583a5ba4cea01e"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -274,9 +274,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.22.3"
+version = "0.22.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67ce096073ec5405f5ee2b8b31f03a68e02aa10d5d4f565eca04acc41931fa1c"
+checksum = "ec15a5ba277339d04763f4c23d85987a5b08cbb494860be141e6a10a8eb88022"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -284,9 +284,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.22.3"
+version = "0.22.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2440c6d12bc8f3ae39f1e775266fa5122fd0c8891ce7520fa6048e683ad3de28"
+checksum = "15e0f01b5364bcfbb686a52fc4181d412b708a68ed20c330db9fc8d2c2bf5a43"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -296,9 +296,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.22.3"
+version = "0.22.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1be962f0e06da8f8465729ea2cb71a416d2257dff56cbe40a70d3e62a93ae5d1"
+checksum = "a09b550200e1e5ed9176976d0060cbc2ea82dc8515da07885e7b8153a85caacb"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 27ce57c..6a60abb 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -14,7 +14,7 @@ crate-type = ["cdylib"]
 
 [dependencies]
 tsp-asn1 = { path = "tsp-asn1" }
-pyo3 = { version = "0.22.3", features = ["abi3"] }
+pyo3 = { version = "0.22.4", features = ["abi3"] }
 asn1 = "0.17"
 self_cell = "1"
 hex = "0.4"