diff --git a/dev_requirements.txt b/dev_requirements.txt
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,9 +1,9 @@
-pytest >= 4.6.6, < 6.3
-pytest-sugar >= 0.9.2, < 0.10
-pytest-benchmark >= 3.2.2, < 3.3
-pytest-localserver >= 0.5.0, < 0.6
-mock >= 3.0.0, < 4.1
+pytest >= 4.6.6, < 8.3
+pytest-sugar >= 0.9.2, < 1.1
+pytest-benchmark >= 3.2.2, < 4.1
+pytest-localserver >= 0.5.0, < 0.9
+mock >= 3.0.0, < 5.2
 Sphinx >= 1.8.0, < 5.2
-WebTest >= 2.0.6, < 2.1
-isort == 5.1.2
-pyflakes == 2.2.0
+WebTest >= 2.0.6, < 3.1
+isort == 5.13.2
+pyflakes == 3.2.0