1 files changed, 6 insertions, 0 deletions

diff --git a/crates/ra_hir_expand/src/name.rs b/crates/ra_hir_expand/src/name.rs
index b2e10f445..44b47ec91 100644
--- a/crates/ra_hir_expand/src/name.rs
+++ b/crates/ra_hir_expand/src/name.rs
@@ -143,6 +143,9 @@ pub mod known {
         std,
         core,
         alloc,
+        hash,
+        fmt,
+        io,
         iter,
         ops,
         future,
@@ -167,6 +170,9 @@ pub mod known {
         Neg,
         Not,
         Index,
+        Display,
+        Iterator,
+        Hasher,
         // Builtin macros
         file,
         column,