diff --git a/crates/ra_lsp_server/src/project_model/sysroot.rs b/crates/ra_lsp_server/src/project_model/sysroot.rs
index 1e0604bf52..fb46856716 100644
--- a/crates/ra_lsp_server/src/project_model/sysroot.rs
+++ b/crates/ra_lsp_server/src/project_model/sysroot.rs
@@ -127,6 +127,7 @@ rustc_tsan
 syntax";
 
 const STD_DEPS: &str = "
+alloc
 alloc_jemalloc
 alloc_system
 core