diff --git a/docs/rustdoc/README.md b/docs/rustdoc/README.md
index 2c7ec8da1a..0997f906d5 100644
--- a/docs/rustdoc/README.md
+++ b/docs/rustdoc/README.md
@@ -2,9 +2,7 @@ This directory is empty except for the firebase config file we use to deploy
 rustdoc output, because the contents of the documentation are inline with the
 source code.  We use it to stage the rustdoc output for deployment in CI.
 
-The `index.html` can only be generated using nightly Rust, which we want to
-avoid in CI, because (1) it interferes with caching and (2) sometimes causes
-breakage.  When the list of built crates in the `deployments/scripts/rust-docs` script
+When the list of built crates in the `deployments/scripts/rust-docs` script
 changes, the `index.html` can be regenerated by setting `REGENERATE_INDEX=1`
 like so: