diff --git a/requirements-dev.txt b/requirements-dev.txt
index 830481c4..a32b0fd0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,5 +4,6 @@ setuptools==54.1.2
 Sphinx==3.5.2
 sphinx_rtd_theme==0.5.1
 tox==3.23.0
-pur==5.4.0
-importlib_metadata==3.7.3; python_version < '3.8'
+pur==5.3.0
+importlib_metadata==3.7.2; python_version < '3.8'
+pipdeptree==2.0.0
\ No newline at end of file