diff --git a/codex-rs/rust-toolchain.toml b/codex-rs/rust-toolchain.toml
index dc50bc36d..954b68489 100644
--- a/codex-rs/rust-toolchain.toml
+++ b/codex-rs/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.93.1"
+channel = "1.93.0"
 components = ["clippy", "rustfmt", "rust-src"]