diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e680428c3..15681b01a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -66,8 +66,6 @@ Rules:
 
     *   Itself.
     *   Go standard library.
-        *   Except (transitively) package "net", which would result in a cgo
-            binary. Use `//pkg/unet` instead.
     *   `@org_golang_x_sys//unix:go_default_library` (Go import
         `golang.org/x/sys/unix`).
     *   `@org_golang_x_time//rate:go_default_library` (Go import
@@ -86,6 +84,8 @@ Rules:
     *   `@com_github_opencontainers_runtime_spec//specs_go:go_default_library`
         (Go import `github.com/opencontainers/runtime-spec/specs_go`).
 
+*   For performance reasons, `runsc boot` may not run the `netpoller` goroutine.
+
 ### Code reviews
 
 Before sending code reviews, run `bazel test ...` to ensure tests are passing.