diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 11d7d1e5..d7b4360a 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.81.0"
+channel = "1.91.0"
 targets = ["i686-unknown-linux-gnu"]