diff --git a/tox.ini b/tox.ini
index e48645f..d76806a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -40,9 +40,8 @@ allowlist_externals =
     sh
     bash
     tar
-    install_data.sh
 
-commands_pre = ./install_data.sh
+commands_pre = bash ./install_data.sh
 
 commands =
     py.test --capture=sys --basetemp={envtmpdir} tests