diff --git a/src/handlers/docs_update.rs b/src/handlers/docs_update.rs
index c134c880..40c54df7 100644
--- a/src/handlers/docs_update.rs
+++ b/src/handlers/docs_update.rs
@@ -21,7 +21,6 @@ const SUBMODULES: &[&str] = &[
     "src/doc/nomicon",
     "src/doc/reference",
     "src/doc/rust-by-example",
-    "src/doc/rustc-dev-guide",
 ];
 
 const TITLE: &str = "Update books";