diff --git a/flake.nix b/flake.nix
index de078fa..bc060a3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,7 +26,7 @@
             {
               name = "calva";
               publisher = "betterthantomorrow";
-              version = "2.0.486";
+              version = "v2.0.486";
               sha256 = "sha256-pL+OgJvIK5eqE5Kr/wDeJ+2BGUT9Uj42coWSHtbPolk=";
             }
           ];