diff --git a/requirements-dev.txt b/requirements-dev.txt
index fd2107e..094af0a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,7 +8,7 @@ docformatter==1.4
 coverage==6.3.1
 autoflake==1.4
 tox==3.24.5
-pur==5.4.3
+pur==6.0.1
 wheel==0.37.1
 setuptools==60.8.1
 twine==3.8.0