diff --git a/xtask/src/install.rs b/xtask/src/install.rs
index 177028b082..91d6a28533 100644
--- a/xtask/src/install.rs
+++ b/xtask/src/install.rs
@@ -8,7 +8,7 @@ use xshell::{cmd, pushd};
 use crate::flags;
 
 // Latest stable, feel free to send a PR if this lags behind.
-const REQUIRED_RUST_VERSION: u32 = 50;
+const REQUIRED_RUST_VERSION: u32 = 51;
 
 impl flags::Install {
     pub(crate) fn run(self) -> Result<()> {