diff --git a/Cargo.lock b/Cargo.lock
index 47daf00b..00958308 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4523,18 +4523,18 @@ dependencies = [
 
 [[package]]
 name = "libssz"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d498c0482bba87d2647ea4601ea76cf2b498065e3958798a88f49274f3ced5e9"
+checksum = "b4bdd6d63ed811ae164966de20810be780e07de784a4834ccfe6be90480c369e"
 dependencies = [
  "smallvec",
 ]
 
 [[package]]
 name = "libssz-derive"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08ddfb5c969c28a4a54043e630f80c723352637bd1020f256ee3ac7a8814922b"
+checksum = "aeee1b9ac9200429f7e9830492765445989ea61c3fb9028ad5a96e1dd5f5e913"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4543,9 +4543,9 @@ dependencies = [
 
 [[package]]
 name = "libssz-merkle"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "63c6d6d5ce5d79bba66bc98c99869eedffedf7f14f0aa0915f1a62802650bdf6"
+checksum = "863eca32d1a43e5ec41106a515552efa8307768d37c68d26b7f21ff13cfee1a7"
 dependencies = [
  "libssz",
  "sha2",
@@ -4553,9 +4553,9 @@ dependencies = [
 
 [[package]]
 name = "libssz-types"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "747273ab2d923e82ed147091fe0fb3e602dd2012c872cdad5efe69e27c3b4099"
+checksum = "d4231ac301726840a3fe111f11bd4619d3c97ed155cb94c88dbf92b70e04e017"
 dependencies = [
  "libssz",
  "libssz-merkle",
diff --git a/Cargo.toml b/Cargo.toml
index 0013defe..1d41c5a7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -85,10 +85,10 @@ clap = { version = "4.3", features = ["derive", "env"] }
 leansig = { git = "https://github.com/leanEthereum/leanSig", branch = "devnet4" }
 
 # SSZ implementation
-libssz = "0.2.2"
-libssz-derive = "0.2.2"
-libssz-merkle = "0.2.2"
-libssz-types = "0.2.2"
+libssz = "0.3.0"
+libssz-derive = "0.3.0"
+libssz-merkle = "0.3.0"
+libssz-types = "0.3.0"
 
 # Build-time version info
 vergen-git2 = { version = "9", features = ["rustc"] }