diff --git a/examples/viewports/Cargo.toml b/examples/viewports/Cargo.toml
index ab6aa10b0..235eb8aa4 100644
--- a/examples/viewports/Cargo.toml
+++ b/examples/viewports/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 authors = ["konkitoman"]
 license = "MIT OR Apache-2.0"
 edition = "2021"
-rust-version = "1.65"
+rust-version = "1.70"
 publish = false
 
 [features]