diff --git a/channels.nix b/channels.nix
index 876ef936..13319aaa 100644
--- a/channels.nix
+++ b/channels.nix
@@ -13,7 +13,7 @@ let
   };
 in
 rec {
-  hera = nixos-20-09;
+  hera = nixos-21-05;
   apollo = nixos-21-05;
   chor-cloud = hera;
 }