diff --git a/parsers/build.rs b/parsers/build.rs
deleted file mode 100644
index 111b92c1..00000000
--- a/parsers/build.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use rustc_version::{version_meta, Channel};
-
-fn main() {
-    let version = version_meta().unwrap();
-
-    match version.channel {
-        Channel::Nightly => {
-            println!("cargo:rustc-cfg=rustc_nightly");
-        }
-        _ => {}
-    }
-}