1 files changed, 1 insertions, 0 deletions

diff --git a/crates/ra_ide_db/Cargo.toml b/crates/ra_ide_db/Cargo.toml
index 7ff1a536e..52f0f23df 100644
--- a/crates/ra_ide_db/Cargo.toml
+++ b/crates/ra_ide_db/Cargo.toml
@@ -16,6 +16,7 @@ rayon = "1.3.0"
 fst = { version = "0.3.5", default-features = false }
 rustc-hash = "1.1.0"
 superslice = "1.0.0"
+once_cell = "1.3.1"
 
 ra_syntax = { path = "../ra_syntax" }
 ra_text_edit = { path = "../ra_text_edit" }