1 files changed, 1 insertions, 0 deletions

diff --git a/shell.nix b/shell.nix
index a85e845..bff07ad 100644
--- a/shell.nix
+++ b/shell.nix
@@ -7,6 +7,7 @@
 pkgs.mkShell {
   buildInputs = [
     pkgs.coreutils
+    pkgs.docopts
     pkgs.findutils
     pkgs.gawk
     pkgs.git