diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 5757afabc32..3e9fe466fdd 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1110,6 +1110,7 @@ in modules // {
       rsa
       pyasn1
       pkgs.groff
+      pkgs.less
     ];
 
     postInstall = ''