diff --git a/requirements-dev.txt b/requirements-dev.txt
index 79c4abe1..f8c67de3 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,52 +4,52 @@
 #
 #    pip-compile --output-file=requirements-dev.txt requirements-dev.in
 #
-attrs==22.1.0
+attrs==23.1.0
     # via
     #   -c requirements.txt
     #   pytest
-black==22.1.0
+black==23.9.1
     # via -r requirements-dev.in
-click==8.0.3
+click==8.1.7
     # via black
-coverage==6.3.1
+coverage==7.3.1
     # via -r requirements-dev.in
-flake8==4.0.1
+flake8==6.1.0
     # via -r requirements-dev.in
-iniconfig==1.1.1
+iniconfig==2.0.0
     # via pytest
-isort==5.10.1
+isort==5.12.0
     # via -r requirements-dev.in
-mccabe==0.6.1
+mccabe==0.7.0
     # via flake8
-mypy==0.931
+mypy==1.5.1
     # via -r requirements-dev.in
-mypy-extensions==0.4.3
+mypy-extensions==1.0.0
     # via
     #   black
     #   mypy
-packaging==21.3
+packaging==23.1
     # via pytest
-pathspec==0.9.0
+pathspec==0.11.2
     # via black
-platformdirs==2.4.1
+platformdirs==3.10.0
     # via black
-pluggy==1.0.0
+pluggy==1.3.0
     # via pytest
 py==1.11.0
     # via pytest
-pycodestyle==2.8.0
+pycodestyle==2.11.0
     # via flake8
-pyflakes==2.4.0
+pyflakes==3.1.0
     # via flake8
-pyparsing==3.0.7
+pyparsing==3.1.1
     # via packaging
-pytest==7.0.0
+pytest==7.4.2
     # via -r requirements-dev.in
-tomli==2.0.0
+tomli==2.0.1
     # via
     #   black
     #   mypy
     #   pytest
-typing-extensions==4.0.1
+typing-extensions==4.7.1
     # via mypy
diff --git a/requirements.txt b/requirements.txt
index 15865dcc..6b9f1151 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,23 +6,23 @@
 #
 appdirs==1.4.4
     # via fs
-attrs==22.1.0
+attrs==23.1.0
     # via
     #   cattrs
     #   ufoLib2 (setup.cfg)
-cattrs==22.2.0
+cattrs==23.1.2
     # via ufoLib2 (setup.cfg)
-fonttools[ufo]==4.29.1
+fonttools[ufo]==4.42.1
     # via ufoLib2 (setup.cfg)
-fs==2.4.15
+fs==2.4.16
     # via fonttools
-lxml==4.9.1
+lxml==4.9.3
     # via ufoLib2 (setup.cfg)
-msgpack==1.0.4
+msgpack==1.0.5
     # via ufoLib2 (setup.cfg)
-orjson==3.7.8 ; platform_python_implementation != "PyPy"
+orjson==3.9.7; platform_python_implementation != "PyPy"
     # via ufoLib2 (setup.cfg)
-pytz==2021.3
+pytz==2023.3.post1
     # via fs
 six==1.16.0
     # via fs