diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index cac8eb0..6c5dfd6 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -8,7 +8,17 @@ version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3522623dbb7db59b34439c022ab0445a0257a62ad20d499da3a3507394708559"
 dependencies = [
- "asn1_derive",
+ "asn1_derive 0.18.0",
+]
+
+[[package]]
+name = "asn1"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18d97d0d2e60ad0595a73b82264dcd46c2f96769b0f555ae71c14122f0679f65"
+dependencies = [
+ "asn1_derive 0.19.0",
+ "itoa",
 ]
 
 [[package]]
@@ -22,6 +32,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "asn1_derive"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00cec5ab4e9217b82bdd194bf6a4c74890a7e6d530159546bd83684f42211b8a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.3.0"
@@ -88,7 +109,7 @@ name = "cryptography-x509"
 version = "0.1.0"
 source = "git+https://github.com/pyca/cryptography.git?rev=a63ca251a7aa8a5aac6153e0b69083cb05e1a6d0#a63ca251a7aa8a5aac6153e0b69083cb05e1a6d0"
 dependencies = [
- "asn1",
+ "asn1 0.18.0",
 ]
 
 [[package]]
@@ -155,6 +176,12 @@ version = "2.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b248f5224d1d606005e02c97f5aa4e88eeb230488bcc03bc9ca4d7991399f2b5"
 
+[[package]]
+name = "itoa"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
+
 [[package]]
 name = "libc"
 version = "0.2.158"
@@ -256,9 +283,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.22.6"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f402062616ab18202ae8319da13fa4279883a2b8a9d9f83f20dbade813ce1884"
+checksum = "7ebb0c0cc0de9678e53be9ccf8a2ab53045e6e3a8be03393ceccc5e7396ccb40"
 dependencies = [
  "cfg-if",
  "indoc",
@@ -274,9 +301,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.22.6"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b14b5775b5ff446dd1056212d778012cbe8a0fbffd368029fd9e25b514479c38"
+checksum = "80e3ce69c4ec34476534b490e412b871ba03a82e35604c3dfb95fcb6bfb60c09"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -284,9 +311,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.22.6"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ab5bcf04a2cdcbb50c7d6105de943f543f9ed92af55818fd17b660390fc8636"
+checksum = "3b09f311c76b36dfd6dd6f7fa6f9f18e7e46a1c937110d283e80b12ba2468a75"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -294,9 +321,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.22.6"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fd24d897903a9e6d80b968368a34e1525aeb719d568dba8b3d4bfa5dc67d453"
+checksum = "fd4f74086536d1e1deaff99ec0387481fb3325c82e4e48be0e75ab3d3fcb487a"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -306,9 +333,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.22.6"
+version = "0.23.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36c011a03ba1e50152b4b394b479826cad97e7a21eb52df179cd91ac411cbfbe"
+checksum = "9e77dfeb76b32bbf069144a5ea0a36176ab59c8db9ce28732d0f06f096bbfbc8"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -360,7 +387,7 @@ dependencies = [
 name = "rfc3161-client"
 version = "0.1.0"
 dependencies = [
- "asn1",
+ "asn1 0.19.0",
  "cryptography-x509",
  "hex",
  "openssl",
@@ -415,7 +442,7 @@ checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 name = "tsp-asn1"
 version = "0.0.1"
 dependencies = [
- "asn1",
+ "asn1 0.18.0",
  "cryptography-x509",
 ]
 
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index d7dcdc2..dc56531 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -14,8 +14,8 @@ crate-type = ["cdylib"]
 
 [dependencies]
 tsp-asn1 = { path = "tsp-asn1" }
-pyo3 = { version = "0.22.6", features = ["abi3"] }
-asn1 = "0.18"
+pyo3 = { version = "0.23.1", features = ["abi3"] }
+asn1 = "0.19"
 self_cell = "1"
 hex = "0.4"
 sha2 = "0.10.8"
diff --git a/rust/tsp-asn1/Cargo.toml b/rust/tsp-asn1/Cargo.toml
index dea06e9..eaa5211 100644
--- a/rust/tsp-asn1/Cargo.toml
+++ b/rust/tsp-asn1/Cargo.toml
@@ -11,7 +11,7 @@ publish = false
 name = "tsp_asn1"
 
 [dependencies]
-asn1 = "0.18"
+asn1 = "0.19"
 cryptography-x509 = { git = "https://github.com/pyca/cryptography.git", rev = "a63ca251a7aa8a5aac6153e0b69083cb05e1a6d0" }
 
 [dev-dependencies]