diff --git a/shell.nix b/shell.nix
index 6b211f6e6..f911f8699 100644
--- a/shell.nix
+++ b/shell.nix
@@ -57,6 +57,7 @@ let
     network
     network
     network-uri
+    pandoc-lua-marshal
     pandoc-types
     parsec
     process