diff --git a/vendor/ocaml/interop/shim/third-party/rust/Cargo.toml b/vendor/ocaml/interop/shim/third-party/rust/Cargo.toml
index 2cad4e66..4c0e700f 100644
--- a/vendor/ocaml/interop/shim/third-party/rust/Cargo.toml
+++ b/vendor/ocaml/interop/shim/third-party/rust/Cargo.toml
@@ -13,7 +13,7 @@ path = "top/main.rs"
 
 [dependencies]
 anyhow = "1.0.75"
-bitflags = "1.3"
+bitflags = "2.4"
 bstr = { version = "1.4.0", features = ["serde", "std", "unicode"] }
 bumpalo = { version = "3.14.0", features = ["allocator_api", "collections"] }
 clap-3 = { package = "clap", version = "3.2.25", features = ["derive", "env", "regex", "unicode", "wrap_help"] }