diff --git a/Cargo.toml b/Cargo.toml
index cb9bf8e..67a9d3b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 authors = ["Eric Scouten <scouten@adobe.com>"]
 keywords = ["xmp", "metadata"]
 categories = ["api-bindings"]
-edition = "2018"
+edition = "2021"
 rust-version = "1.60.0"
 exclude = [
     "external/xmp_toolkit/docs",