diff --git a/Cargo.lock b/Cargo.lock
index b3ca7eb..14d8a45 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5248,6 +5248,7 @@ dependencies = [
  "reth-primitives",
  "rsp-client-executor",
  "rsp-host-executor",
+ "serde",
  "serde_json",
  "sp1-helper",
  "sp1-sdk",
diff --git a/Cargo.toml b/Cargo.toml
index 19883ad..e6eaf88 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ tokio = { version = "1.21", default-features = false, features = [
     "rt-multi-thread",
 ] }
 serde_json = "1.0.94"
-serde = { version = "1.0", default-features = false }
+serde = { version = "1.0", default-features = false, features = ["derive"] }
 futures = "0.3"
 url = "2.3"
 thiserror = "1.0.61"
diff --git a/bin/host/Cargo.toml b/bin/host/Cargo.toml
index 427418b..b872196 100644
--- a/bin/host/Cargo.toml
+++ b/bin/host/Cargo.toml
@@ -11,6 +11,7 @@ tracing-subscriber = "0.3.18"
 dotenv = "0.15.0"
 clap = { version = "4.5.7", features = ["derive", "env"] }
 serde_json.workspace = true
+serde.workspace = true
 bincode = "1.3.3"
 csv = "1.1"
 # workspace
diff --git a/bin/host/src/execute.rs b/bin/host/src/execute.rs
index 2f39154..7b19be8 100644
--- a/bin/host/src/execute.rs
+++ b/bin/host/src/execute.rs
@@ -59,8 +59,6 @@ pub fn process_execution_report(
         kzg_point_eval_cycles,
     };
 
-    let report_file_exists = report_path.exists();
-
     // Open the file for appending or create it if it doesn't exist
     let file = OpenOptions::new().append(true).create(true).open(report_path)?;