diff --git a/Cargo.lock b/Cargo.lock
index 329c3bdce..81afcebc7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1736,6 +1736,7 @@ dependencies = [
  "reth-rlp",
  "reth-stages",
  "serde",
+ "serde_bytes",
  "serde_json",
  "thiserror",
  "tokio",
@@ -6379,6 +6380,15 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde_bytes"
+version = "0.11.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "416bda436f9aab92e02c8e10d49a15ddd339cea90b6e340fe51ed97abb548294"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.164"
diff --git a/testing/ef-tests/Cargo.toml b/testing/ef-tests/Cargo.toml
index 109fefd45..c394b9a8d 100644
--- a/testing/ef-tests/Cargo.toml
+++ b/testing/ef-tests/Cargo.toml
@@ -24,3 +24,4 @@ walkdir = "2.3.3"
 serde = "1.0.163"
 serde_json = { workspace = true }
 thiserror = { workspace = true }
+serde_bytes = "0.11.9"
\ No newline at end of file
diff --git a/testing/ef-tests/src/models.rs b/testing/ef-tests/src/models.rs
index 31a9612f0..abc9bf425 100644
--- a/testing/ef-tests/src/models.rs
+++ b/testing/ef-tests/src/models.rs
@@ -37,6 +37,20 @@ pub struct BlockchainTest {
     #[serde(default)]
     /// Engine spec.
     pub self_engine: SealEngine,
+    #[serde(rename = "_info")]
+    #[allow(unused)]
+    info: BlockchainTestInfo,
+}
+
+#[derive(Debug, PartialEq, Eq, Deserialize)]
+struct BlockchainTestInfo {
+    #[serde(rename = "filling-rpc-server")]
+    #[allow(unused)]
+    // One test has an invalid string in this field, which breaks our CI:
+    // https://github.com/ethereum/tests/blob/6c252923bdd1bd5a70f680df1214f866f76839db/GeneralStateTests/stTransactionTest/ValueOverflow.json#L5
+    // By using `serde_bytes::ByteBuf`, we ignore the validation of this field as a string.
+    // TODO(alexey): remove when `ethereum/tests` is fixed
+    filling_rpc_server: serde_bytes::ByteBuf,
 }
 
 /// A block header in an Ethereum blockchain test.