diff --git a/Cargo.lock b/Cargo.lock
index 2e8f1521..31fa22f0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -194,7 +194,7 @@ checksum = "db8b7511298d5b7784b40b092d9e9dcd3a627a5707e4b5e507931ab0d44eeebf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "synstructure",
 ]
 
@@ -206,7 +206,7 @@ checksum = "726535892e8eae7e70657b4c8ea93d26b8553afb1ce617caee529ef96d7dee6c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "synstructure",
 ]
 
@@ -218,7 +218,7 @@ checksum = "2777730b2039ac0f95f093556e61b6d26cebed5393ca6f152717777cec3a42ed"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -234,7 +234,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a3203e79f4dd9bdda415ed03cf14dae5a2bf775c683a00f94e9cd1faf0f596e5"
 dependencies = [
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -406,7 +406,7 @@ checksum = "b84f9ebcc6c1f5b8cb160f6990096a5c127f423fcb6e1ccc46c370cbdfb75dfc"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -737,7 +737,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -995,7 +995,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d2301688392eb071b0bf1a37be05c469d3cc4dbbd95df672fe28ab021e6a096"
 dependencies = [
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1075,7 +1075,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1086,7 +1086,7 @@ checksum = "7618812407e9402654622dd402b0a89dff9ba93badd6540781526117b92aab7e"
 dependencies = [
  "darling_core",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1112,7 +1112,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a5bbed42daaa95e780b60a50546aa345b8413a1e46f9a40a12907d3598f038db"
 dependencies = [
  "data-encoding",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1184,7 +1184,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1194,7 +1194,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f0314b72bed045f3a68671b3c86328386762c93f82d98c65c3cb5e5f573dd68"
 dependencies = [
  "derive_builder_core",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1225,7 +1225,7 @@ checksum = "3bf95dc3f046b9da4f2d51833c0d3547d8564ef6910f5c1ed130306a75b92886"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1330,7 +1330,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -1520,7 +1520,7 @@ checksum = "3eb14ed937631bd8b8b8977f2c198443447a8355b6e3ca599f38c975e5a963b6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -2780,7 +2780,7 @@ version = "0.32.0"
 dependencies = [
  "heck",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -3174,7 +3174,7 @@ dependencies = [
  "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "synstructure",
 ]
 
@@ -3528,7 +3528,7 @@ checksum = "069bdb1e05adc7a8990dce9cc75370895fbe4e3d58b9b73bf1aee56359344a55"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -3692,7 +3692,7 @@ dependencies = [
  "proc-macro-error-attr",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "version_check",
 ]
 
@@ -3736,7 +3736,7 @@ checksum = "72b6a5217beb0ad503ee7fa752d451c905113d70721b937126158f3106a48cc1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -3759,7 +3759,7 @@ dependencies = [
  "itertools",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -4292,9 +4292,9 @@ checksum = "f638d531eccd6e23b980caf34876660d38e265409d8e99b397ab71eb3612fad0"
 
 [[package]]
 name = "serde"
-version = "1.0.155"
+version = "1.0.157"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71f2b4817415c6d4210bfe1c7bfcf4801b2d904cb4d0e1a8fdb651013c9e86b8"
+checksum = "707de5fcf5df2b5788fca98dd7eab490bc2fd9b7ef1404defc462833b83f25ca"
 dependencies = [
  "serde_derive",
 ]
@@ -4310,13 +4310,13 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.155"
+version = "1.0.157"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d071a94a3fac4aff69d023a7f411e33f40f3483f8c5190b1953822b6b76d7630"
+checksum = "78997f4555c22a7971214540c4a661291970619afd56de19f77e0de86296e1e5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.2",
 ]
 
 [[package]]
@@ -4564,6 +4564,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59d3276aee1fa0c33612917969b5172b5be2db051232a6e4826f1a1a9191b045"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "synstructure"
 version = "0.12.6"
@@ -4572,7 +4583,7 @@ checksum = "f36bdaa60a83aca3921b5259d5400cbf5e90fc51931376a9bd4a0eb79aa7210f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "unicode-xid",
 ]
 
@@ -4642,7 +4653,7 @@ checksum = "5420d42e90af0c38c3290abcca25b9b3bdf379fc9f55c528f53a269d9c9a267e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -4725,7 +4736,7 @@ checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -4789,7 +4800,7 @@ checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -5071,7 +5082,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "wasm-bindgen-shared",
 ]
 
@@ -5105,7 +5116,7 @@ checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -5662,6 +5673,6 @@ checksum = "44bf07cb3e50ea2003396695d58bf46bc9887a1f362260446fad6bc4e79bd36c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.109",
  "synstructure",
 ]
diff --git a/misc/keygen/Cargo.toml b/misc/keygen/Cargo.toml
index ead57473..48d6fa94 100644
--- a/misc/keygen/Cargo.toml
+++ b/misc/keygen/Cargo.toml
@@ -12,7 +12,7 @@ publish = false
 [dependencies]
 clap = { version = "4.1.6", features = ["derive"] }
 zeroize = "1"
-serde = { version = "1.0.155", features = ["derive"] }
+serde = { version = "1.0.157", features = ["derive"] }
 serde_json = "1.0.94"
 libp2p-core = { version = "0.39.0", path = "../../core" }
 base64 = "0.21.0"