diff --git a/Cargo.toml b/Cargo.toml
index 5063ffecb153a716769bc356287a37871a7598fe..7e7090b3c3a0324c9fa86cc906390a012002fe1e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ authors = [
 	"Christopher Esterhuyse <esterhuy@cwi.nl>",
 	"Hans-Dieter Hiep <hdh@cwi.nl>"
 ]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 # convenience macros