diff --git a/Cargo.toml b/Cargo.toml
index 62dc671..f5f221b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "runrs"
 version = "0.1.0"
 edition = "2018"
+license = "Apache 2.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html