diff --git a/packages/bookwyrm/package.nix b/packages/bookwyrm/package.nix
index 4c736f7..fab162f 100644
--- a/packages/bookwyrm/package.nix
+++ b/packages/bookwyrm/package.nix
@@ -92,7 +92,7 @@ mkDerivation {
 		owner = "zedfrigg" ;
 		repo = "bookwyrm" ;
 		rev = "0702731c7f3febb6379b350d11c24a1be65672a4" ;
-		hash = "" ;
+		hash = "sha256-rSJ5xflET15WuAukGEJXfJFflZh9ZujYfCJStcUseGI=" ;
 	} ;
 
 	dontPatch = true ;