diff --git a/shell.nix b/shell.nix
index 298fd7a..db9fb12 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,6 +5,7 @@ stdenv.mkDerivation {
   buildInputs = [
     # System requirements.
     readline
+    git
 
     # Python requirements (enough to get a virtualenv going).
     python38Full