diff --git a/.cargo/config b/.cargo/config.toml
similarity index 66%
rename from .cargo/config
rename to .cargo/config.toml
index 8e9ab91d..2f9647c1 100644
--- a/.cargo/config
+++ b/.cargo/config.toml
@@ -1,4 +1,5 @@
-unstable.build-std = ["core", "compiler_builtins"]
+[unstable]
+build-std = ["core", "compiler_builtins"]
 
 [build]
 target = "x86_64-blog_os.json"