diff --git a/pkgs/servers/mir/default.nix b/pkgs/servers/mir/default.nix
index 623806cfb378..01a9e2eca38e 100644
--- a/pkgs/servers/mir/default.nix
+++ b/pkgs/servers/mir/default.nix
@@ -5,8 +5,8 @@ let
 in
 {
   mir = common {
-    version = "2.21.0";
-    hash = "sha256-WCVh1163ZmT8tHe60AOxSg7AEDXsSekNb7UpbojyIXU=";
+    version = "2.21.1";
+    hash = "sha256-FDZ40LiuvMuyWQQGjgOHTm+J3i7yczKMzL3dZ1jsz/E=";
   };
 
   mir_2_15 = common {