diff --git a/lib/lsp-server/Cargo.toml b/lib/lsp-server/Cargo.toml
index d44b2d4e406..01707d30191 100644
--- a/lib/lsp-server/Cargo.toml
+++ b/lib/lsp-server/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 [dependencies]
 log = "0.4.17"
 serde_json = "1.0.96"
-serde = "1.0.156"
+serde = { version = "1.0.156", features = ["derive"] }
 crossbeam-channel = "0.5.6"
 
 [dev-dependencies]