diff --git a/tox.ini b/tox.ini
index cb3bc50f73..5622c88c30 100644
--- a/tox.ini
+++ b/tox.ini
@@ -563,7 +563,7 @@ commands =
     {[python-cli-options]some-isolation} \
     {[python-cli-options]warnings-to-errors} \
     bin{/}resolve_platform_lock_file.py \
-      requirements \
+      '{toxinidir}{/}requirements{/}' \
       {posargs}
 commands_post =
   # NOTE: Invocations without posargs result in trailing spaces in the