diff --git a/requirements_dev.txt b/requirements_dev.txt
index 8d83c3a..838c21b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ flake8==3.9.2
 tox==3.24.0
 pytest==6.2.4
 coverage==5.5
-twine==3.4.1
+twine==3.4.2
 Sphinx==4.1.1
 pytest-runner==5.3.1
 Proj=4.9.0