diff --git a/packages/bookwyrm/package.nix b/packages/bookwyrm/package.nix
index af513c5..7f65478 100644
--- a/packages/bookwyrm/package.nix
+++ b/packages/bookwyrm/package.nix
@@ -92,7 +92,7 @@ mkDerivation {
 		owner = "zedfrigg" ;
 		repo = "bookwyrm" ;
 		rev = "6ed1025a8dcb07f1ccd2a66068875191c648f9e3" ;
-		hash = "" ;
+		hash = "sha256-7nztn69grIKrhxViY7IUbzkY0j6r0E9xG/qBkrbYh/4=" ;
 	} ;
 
 	dontPatch = true ;