diff --git a/flake.nix b/flake.nix
index bc265d5..33957b0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -27,7 +27,7 @@
               name = "calva";
               publisher = "betterthantomorrow";
               version = "2.0.486";
-              sha256sum = "";
+              sha256sum = "sha256-pL+OgJvIK5eqE5Kr/wDeJ+2BGUT9Uj42coWSHtbPolk=";
             }
           ];
         })