diff --git a/packages/bookwyrm/package.nix b/packages/bookwyrm/package.nix
index b13a707..a027788 100644
--- a/packages/bookwyrm/package.nix
+++ b/packages/bookwyrm/package.nix
@@ -101,7 +101,7 @@ mkDerivation {
 		owner = "zedfrigg" ;
 		repo = "bookwyrm" ;
 		rev = "bb6e8e516c6f4f97290528bdeb01faeecbbfa0bb" ;
-		hash = "" ;
+		hash = "sha256-RJASMxQ0hhAgfIBpNyI8cI9/poCGb5AqW+UZxypmYGo=" ;
 	} ;
 
 	dontPatch = true ;