diff --git a/Cargo.toml b/Cargo.toml
index d3a7f070..df70dbf2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 repository = "https://github.com/sharkdp/hexyl"
 version = "0.13.1"
 edition = "2021"
-rust-version = "1.63"
+rust-version = "1.66"
 
 [dependencies]
 anyhow = "1.0"