diff --git a/shell.nix b/shell.nix
index d0a0842bbe26ec36a2889c26e96f0de9a44db461..9924951fdd81e7f93047c98f1ed904833a848db6 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,6 +5,7 @@ pkgs.mkShell {
     git
     mercurial
     wget unzip gnutar
+    pkg-config zlib
   ];
 
   hardeningDisable = [ "all" ];