diff --git a/pkgs/applications/misc/octoprint/default.nix b/pkgs/applications/misc/octoprint/default.nix
index 377c8544f66..3c192c124cb 100644
--- a/pkgs/applications/misc/octoprint/default.nix
+++ b/pkgs/applications/misc/octoprint/default.nix
@@ -90,6 +90,8 @@ let
             "test_set_external_modification"
           ];
 
+          passthru.python = self.python;
+
           meta = with stdenv.lib; {
             homepage = "https://octoprint.org/";
             description = "The snappy web interface for your 3D printer";