diff --git a/crates/rust-analyzer/src/caps.rs b/crates/rust-analyzer/src/caps.rs
index 457399a61898..dc6cf61f79a8 100644
--- a/crates/rust-analyzer/src/caps.rs
+++ b/crates/rust-analyzer/src/caps.rs
@@ -115,6 +115,7 @@ pub fn server_capabilities(config: &Config) -> ServerCapabilities {
         experimental: Some(json!({
             "externalDocs": true,
             "hoverRange": true,
+            "inlayHints": true,
             "joinLines": true,
             "matchingBrace": true,
             "moveItem": true,