diff --git a/requirements-tree.txt b/requirements-tree.txt
index ee81676..84e1bcf 100644
--- a/requirements-tree.txt
+++ b/requirements-tree.txt
@@ -5,4 +5,4 @@ pip-tools==1.9.0
 pipdeptree==0.10.1
   - pip [required: >=6.0.0, installed: 9.0.1]
 setuptools==36.2.2
-wheel==0.29.0
+wheel==0.38.1