diff --git a/clients/quadraticserver/matrix/cinny.nix b/clients/quadraticserver/matrix/cinny.nix
index 0e4d28a..4b3cdd1 100644
--- a/clients/quadraticserver/matrix/cinny.nix
+++ b/clients/quadraticserver/matrix/cinny.nix
@@ -13,12 +13,12 @@
             owner = "lapingvino";
             repo = "cinny";
             rev = "719381934efbe3aab098d4f077ec4ee14a30eddb";
-            hash = "";
+            hash = "sha256-qEUWTU3nCCqvMnC4JPSe2RiJURd6oFJqBHGHs5VNfZ4=";
           };
           npmDeps = pkgs.fetchNpmDeps {
             inherit src;
             name = "${old.pname}-${old.version}-npm-deps";
-            hash = "";
+            hash = "sha256-a4cnxo5smN+a6DWKPPkbGkd8gcQe/jazSEmrqKcN0fA=";
           };
         });
       }