1 files changed, 1 insertions, 0 deletions

diff --git a/env.nix b/env.nix
index 9a38cfe..86f17cc 100644
--- a/env.nix
+++ b/env.nix
@@ -20,6 +20,7 @@ let
       aeson
       cabal-install
       case-insensitive
+      docopt
       email-header
       friendly-time
       mime