diff --git a/toCOPY/builder-constraints.txt b/toCOPY/builder-constraints.txt
index eaf5a0b8..15d78701 100644
--- a/toCOPY/builder-constraints.txt
+++ b/toCOPY/builder-constraints.txt
@@ -1,3 +1,5 @@
 more-itertools===5.0.0;python_version=='2.7' # Last version with official 2.7 support
 pyparsing===2.4.7
-filelock===3.4.0  # Last version with official support was 3.2.1, but 3.4.0 is known to work
+filelock===3.4.0  # Last version with official py2.7 support was 3.2.1, but 3.4.0 is known to work
+platformdirs===2.4.0  # Last version with official py2.7 support was 2.0.2, but 2.4.0 is known to work
+