2 files changed, 2 insertions, 1 deletions

diff --git a/xtask/src/lib.rs b/xtask/src/lib.rs
index 190baeddf..40a6682be 100644
--- a/xtask/src/lib.rs
+++ b/xtask/src/lib.rs
@@ -144,6 +144,7 @@ pub fn run_fuzzer() -> Result<()> {
 }
 
 pub fn reformat_staged_files() -> Result<()> {
+    run_rustfmt(Mode::Overwrite)?;
     let root = project_root();
     let output = Command::new("git")
         .arg("diff")
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index c52902bb5..4201c6a6a 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -20,7 +20,7 @@ use xtask::{
 };
 
 // Latest stable, feel free to send a PR if this lags behind.
-const REQUIRED_RUST_VERSION: u32 = 39;
+const REQUIRED_RUST_VERSION: u32 = 40;
 
 struct InstallOpt {
     client: Option<ClientOpt>,