diff --git a/crates/proc-macro-srv-cli/Cargo.toml b/crates/proc-macro-srv-cli/Cargo.toml
index 2caa24b7032..a559ba01755 100644
--- a/crates/proc-macro-srv-cli/Cargo.toml
+++ b/crates/proc-macro-srv-cli/Cargo.toml
@@ -14,7 +14,7 @@ proc-macro-api.workspace = true
 
 [features]
 sysroot-abi = ["proc-macro-srv/sysroot-abi"]
-in-rust-tree = ["proc-macro-srv/in-rust-tree"]
+in-rust-tree = ["proc-macro-srv/in-rust-tree", "sysroot-abi"]
 
 
 [[bin]]