diff --git a/requirements_dev.txt b/requirements_dev.txt
index 6e5efc2..ab43b8e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,10 +5,10 @@ watchdog==1.0.2
 flake8==3.8.4
 tox==3.20.1
 coverage==5.3.1
-Sphinx==3.3.1
+Sphinx==3.4.1
 cryptography==3.3.1
 PyYAML==5.3.1
 pytest==6.2.1
 pytest-runner==5.2
 vcrpy==2.1.1
-twine==3.2.0
+twine==3.3.0