diff --git a/requirements_dev.txt b/requirements_dev.txt
index 7770183..19411fb 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,13 +1,13 @@
 -r requirements.txt
-pip==19.2.3
-bump2version==0.5.11
-wheel==0.33.6
-watchdog==0.9.0
-flake8==3.7.8
-tox==3.14.0
-coverage==4.5.4
-Sphinx==1.8.5
-twine==1.14.0
-Click==7.0
-pytest==4.6.5
-pytest-runner==5.1
+pip==20.0.2
+bump2version==1.0.0
+wheel==0.34.2
+watchdog==0.10.2
+flake8==3.7.9
+tox==3.14.5
+coverage==5.0.3
+Sphinx==2.4.4
+twine==3.1.1
+Click==7.1.1
+pytest==5.4.1
+pytest-runner==5.2