diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 18de4e9..a1de405 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
 channel = "1.88.0"
-components = ["rust-analyzer", "clippy"]
+components = ["rust-analyzer", "rust-src", "clippy"]