diff --git a/crates/ml/Cargo.toml b/crates/ml/Cargo.toml
index cc46cabaf..850e0dcd5 100644
--- a/crates/ml/Cargo.toml
+++ b/crates/ml/Cargo.toml
@@ -128,7 +128,7 @@ rust_decimal.workspace = true
 # gymnasium, rerun - REMOVED (RL frameworks moved to ml_training_service)
 
 
-# cudarc — direct dep after candle removal, gated behind cuda feature
+# cudarc — vendored fork (vendor/cudarc): has_async_alloc=false fix for cublasLtMatmul on H100
 cudarc = { version = "0.19", optional = true, default-features = false, features = ["driver", "cublas", "cublaslt", "dynamic-linking", "std", "cuda-version-from-build-system", "f16"] }
 rayon.workspace = true
 crossbeam = { version = "0.8", features = ["std"] }