diff --git a/pkgs/tools/backup/borgbackup/default.nix b/pkgs/tools/backup/borgbackup/default.nix
index 9bc3dfefd4ae..84083c0db2d8 100644
--- a/pkgs/tools/backup/borgbackup/default.nix
+++ b/pkgs/tools/backup/borgbackup/default.nix
@@ -77,6 +77,7 @@ python3.pkgs.buildPythonApplication rec {
 
   checkInputs = with python3.pkgs; [
     e2fsprogs
+    py
     python-dateutil
     pytest-benchmark
     pytest-xdist