diff --git a/Cargo.lock b/Cargo.lock
index 1f6635f..0caf506 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1703,9 +1703,9 @@ checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
 
 [[package]]
 name = "ssz_rs"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f923762d556417668b192ac2fdc9827ea21e6df011d8a0a7e68f3d5da095a675"
+checksum = "057291e5631f280978fa9c8009390663ca4613359fc1318e36a8c24c392f6d1f"
 dependencies = [
  "bitvec",
  "hex",
@@ -1713,14 +1713,13 @@ dependencies = [
  "serde",
  "sha2 0.9.9",
  "ssz_rs_derive",
- "thiserror",
 ]
 
 [[package]]
 name = "ssz_rs_derive"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c679ebd9c1ceeb0f9e5b839952b4a71bfe35a791b431ef7b3ee0b71b7588b565"
+checksum = "f07d54c4d01a1713eb363b55ba51595da15f6f1211435b71466460da022aa140"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/crates/signing-root-util/Cargo.toml b/crates/signing-root-util/Cargo.toml
index 58c474b..a5ac3b0 100644
--- a/crates/signing-root-util/Cargo.toml
+++ b/crates/signing-root-util/Cargo.toml
@@ -12,7 +12,7 @@ rust-version.workspace = true
 doctest = false
 
 [dependencies]
-ssz_rs = "0.8.0"
+ssz_rs = "0.9.0"
 serde = {version = "1.0", features = ["derive"]}
 serde_json = "1.0"
 anyhow = "1.0"