1 files changed, 5 insertions, 5 deletions
diff --git a/tox.ini b/tox.ini
index 6c5d9fa04..3a0440738 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,9 +28,9 @@ commands =
     python setup.py check -r -s -m
     check-manifest
 deps =
-    flake8
-    black
-    isort
+    flake8~=4.0.1
+    black==21.12b0
+    isort~=5.10
     readme_renderer
     check-manifest
 
@@ -66,8 +66,8 @@ commands =
     isort src/pyramid tests setup.py
     black src/pyramid tests setup.py
 deps =
-    black
-    isort
+    black==21.12b0
+    isort~=5.10
 
 [testenv:build]
 skip_install = true