diff --git a/packages/bookwyrm/package.nix b/packages/bookwyrm/package.nix
index 9320afa..5ce0fc5 100644
--- a/packages/bookwyrm/package.nix
+++ b/packages/bookwyrm/package.nix
@@ -92,7 +92,7 @@ mkDerivation {
 		owner = "zedfrigg" ;
 		repo = "bookwyrm" ;
 		rev = "64ea602f029ce46137bbb096396b9e5e768ffd04" ;
-		hash = "" ;
+		hash = "sha256-jHrp1EJfNq2+oTlFsRGu6Dm2oe4uFGR/QazYc6auYFk=" ;
 	} ;
 
 	dontPatch = true ;