diff --git a/requirements/dev.pip b/requirements/dev.pip
index cf17d1d8..01af4ebd 100644
--- a/requirements/dev.pip
+++ b/requirements/dev.pip
@@ -6,7 +6,7 @@
 -r docs.pip
 -r test.pip
 
-bumpversion==0.5.3
-ipython==6.1.0
-wheel==0.29.0
-watchdog==0.8.3
+bumpversion==0.6.0
+ipython==7.26.0
+wheel==0.37.0
+watchdog==2.1.3
diff --git a/tox.ini b/tox.ini
index 100c2d20..44df5367 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,10 +18,10 @@ commands =
 [testenv:flake8]
 basepython = python3
 deps =
-    flake8==3.3.0
-    flake8-debugger==1.4.0
-    flake8-print==2.0.2
-    pep8-naming==0.4.1
+    flake8==3.9.2
+    flake8-debugger==4.0.0
+    flake8-print==4.0.0
+    pep8-naming==0.12.1
 skip_install = True
 commands = flake8 setup.py hamster_lib/ tests/
 
@@ -42,7 +42,7 @@ commands =
 
 [testenv:manifest]
 basepython = python3
-deps = check-manifest==0.35
+deps = check-manifest==0.46
 skip_install = True
 commands =
     check-manifest -v