diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 132aaef41c..4ef13ad845 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -1685,7 +1685,6 @@ dependencies = [
  "seccompiler",
  "serde",
  "serde_json",
- "serde_path_to_error",
  "serde_yaml",
  "serial_test",
  "sha1",
diff --git a/codex-rs/core/Cargo.toml b/codex-rs/core/Cargo.toml
index 2b62d96254..bda19d78ea 100644
--- a/codex-rs/core/Cargo.toml
+++ b/codex-rs/core/Cargo.toml
@@ -78,7 +78,6 @@ rmcp = { workspace = true, default-features = false, features = [
 schemars = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
-serde_path_to_error = { workspace = true }
 serde_yaml = { workspace = true }
 sha1 = { workspace = true }
 sha2 = { workspace = true }