diff --git a/pkgs/development/python-modules/pooch/default.nix b/pkgs/development/python-modules/pooch/default.nix
index 7dd3569519e0..06c4617c0ce9 100644
--- a/pkgs/development/python-modules/pooch/default.nix
+++ b/pkgs/development/python-modules/pooch/default.nix
@@ -7,6 +7,9 @@
 , packaging
 , appdirs
 , requests
+, tqdm
+, paramiko
+, xxhash
 }:
 
 buildPythonPackage rec {
@@ -44,6 +47,14 @@ buildPythonPackage rec {
     "integration"
   ];
 
+  passthru = {
+    optional-dependencies = {
+      progress = [ tqdm ];
+      sftp = [ paramiko ];
+      xxhash = [ xxhash ];
+    };
+  };
+
   meta = with lib; {
     description = "A friend to fetch your data files.";
     homepage = "https://github.com/fatiando/pooch";