diff --git a/codex-rs/Cargo.lock b/codex-rs/Cargo.lock
index 1b92b5afd0..e4bbd30f25 100644
--- a/codex-rs/Cargo.lock
+++ b/codex-rs/Cargo.lock
@@ -2710,7 +2710,6 @@ dependencies = [
  "serde",
  "serde_json",
  "serial_test",
- "sha2",
  "tempfile",
  "test-case",
  "thiserror 2.0.18",
diff --git a/codex-rs/exec-server/Cargo.toml b/codex-rs/exec-server/Cargo.toml
index 1495397c78..21568a5a8a 100644
--- a/codex-rs/exec-server/Cargo.toml
+++ b/codex-rs/exec-server/Cargo.toml
@@ -26,7 +26,6 @@ futures = { workspace = true }
 reqwest = { workspace = true, features = ["json", "rustls-tls", "stream"] }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
-sha2 = { workspace = true }
 thiserror = { workspace = true }
 tokio = { workspace = true, features = [
     "fs",