diff --git a/requirements_dev.txt b/requirements_dev.txt
index 92032521..318bde4a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,18 +1,18 @@
 -e .
-bump2version==0.5.10
-wheel==0.33.1
-watchdog==0.9.0
-flake8==3.7.7
-tox==3.7.0
-coverage==4.5.2
-Sphinx==1.8.4
+bump2version==1.0.1
+wheel==0.36.2
+watchdog==2.0.3
+flake8==3.9.1
+tox==3.23.0
+coverage==5.5
+Sphinx==3.5.4
 # only used for setup script
 # cryptography==1.0.1
-py==1.8.0
-pytest==4.3.0
-PyYAML==3.13
-prospector[with_everything]==1.1.6.2
+py==1.10.0
+pytest==6.2.3
+PyYAML==5.4.1
+prospector[with_everything]==1.3.1
 python-dateutil>=2.6.0
 requests>=2.18
 black>=18.9b0; python_version >= '3.6'
-pyOpenSSL==19.0.0
+pyOpenSSL==20.0.1