diff --git a/python-package/requirements/dev.txt b/python-package/requirements/dev.txt
index 4aa92dd7..29248715 100644
--- a/python-package/requirements/dev.txt
+++ b/python-package/requirements/dev.txt
@@ -10,7 +10,7 @@ attrs==21.2.0
     #   pytest
 autopep8==1.5.7
     # via -r requirements/dev.in
-backports.entry-points-selectable==1.1.0
+backports-entry-points-selectable==1.1.0
     # via virtualenv
 click==7.1.2
     # via
@@ -39,7 +39,7 @@ flake8-annotations==2.7.0
     # via -r requirements/style.in
 flake8-bugbear==21.11.29
     # via -r requirements/style.in
-flake8-isort==4.0.0
+flake8-isort==6.0.0
     # via -r requirements/style.in
 flake8-polyfill==1.0.2
     # via pep8-naming
@@ -112,8 +112,6 @@ six==1.16.0
     # via
     #   tox
     #   virtualenv
-testfixtures==6.18.0
-    # via flake8-isort
 toml==0.10.2
     # via
     #   autopep8
diff --git a/python-package/requirements/style.txt b/python-package/requirements/style.txt
index 0d626e64..3c5155d2 100644
--- a/python-package/requirements/style.txt
+++ b/python-package/requirements/style.txt
@@ -19,7 +19,7 @@ flake8-annotations==2.7.0
     # via -r requirements/style.in
 flake8-bugbear==21.11.29
     # via -r requirements/style.in
-flake8-isort==4.0.0
+flake8-isort==6.0.0
     # via -r requirements/style.in
 flake8-polyfill==1.0.2
     # via pep8-naming
@@ -43,8 +43,6 @@ pycodestyle==2.7.0
     # via flake8
 pyflakes==2.3.1
     # via flake8
-testfixtures==6.18.0
-    # via flake8-isort
 typed-ast==1.4.3
     # via
     #   flake8-annotations