diff --git a/Cargo.toml b/Cargo.toml
index c52d0c6e1..d61e05fa1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ readme = "README.md"
 repository = "https://github.com/solana-labs/solana"
 authors = ["Solana Maintainers <maintainers@solana.com>"]
 license = "Apache-2.0"
+edition = "2018"
 
 [[bin]]
 name = "solana-upload-perf"