1 files changed, 3 insertions, 0 deletions

diff --git a/crates/ra_hir_expand/src/name.rs b/crates/ra_hir_expand/src/name.rs
index 59d8214fd..e62693b68 100644
--- a/crates/ra_hir_expand/src/name.rs
+++ b/crates/ra_hir_expand/src/name.rs
@@ -161,6 +161,7 @@ pub mod known {
         Range,
         Neg,
         Not,
+        Index,
         // Builtin macros
         file,
         column,
@@ -169,6 +170,8 @@ pub mod known {
         stringify,
         format_args,
         format_args_nl,
+        env,
+        option_env,
         // Builtin derives
         Copy,
         Clone,