diff --git a/requirements-dev.txt b/requirements-dev.txt
index 726f2b77..cea6a4a0 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,41 +4,41 @@
 #
 #    pip-compile --output-file=requirements-dev.txt requirements-dev.in
 #
-black==23.11.0
+black==24.4.0
     # via -r requirements-dev.in
 click==8.1.7
     # via black
-coverage==7.3.2
+coverage==7.4.4
     # via -r requirements-dev.in
-flake8==6.1.0
+flake8==7.0.0
     # via -r requirements-dev.in
 iniconfig==2.0.0
     # via pytest
-isort==5.12.0
+isort==5.13.2
     # via -r requirements-dev.in
 mccabe==0.7.0
     # via flake8
-mypy==1.7.1
+mypy==1.9.0
     # via -r requirements-dev.in
 mypy-extensions==1.0.0
     # via
     #   black
     #   mypy
-packaging==23.2
+packaging==24.0
     # via
     #   black
     #   pytest
-pathspec==0.11.2
+pathspec==0.12.1
     # via black
-platformdirs==4.0.0
+platformdirs==4.2.0
     # via black
-pluggy==1.3.0
+pluggy==1.4.0
     # via pytest
 pycodestyle==2.11.1
     # via flake8
-pyflakes==3.1.0
+pyflakes==3.2.0
     # via flake8
-pytest==7.4.3
+pytest==8.1.1
     # via -r requirements-dev.in
-typing-extensions==4.8.0
+typing-extensions==4.11.0
     # via mypy
diff --git a/requirements.txt b/requirements.txt
index a12368c7..40a4041a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,23 +6,23 @@
 #
 appdirs==1.4.4
     # via fs
-attrs==23.1.0
+attrs==23.2.0
     # via
     #   cattrs
     #   ufoLib2 (setup.cfg)
 cattrs==23.2.3
     # via ufoLib2 (setup.cfg)
-fonttools[ufo]==4.46.0
+fonttools[ufo]==4.51.0
     # via
     #   fonttools
     #   ufoLib2 (setup.cfg)
 fs==2.4.16
     # via fonttools
-lxml==4.9.3
+lxml==5.2.1
     # via ufoLib2 (setup.cfg)
-msgpack==1.0.7
+msgpack==1.0.8
     # via ufoLib2 (setup.cfg)
-orjson==3.9.15 ; platform_python_implementation != "PyPy"
+orjson==3.10.0; platform_python_implementation != "PyPy"
     # via ufoLib2 (setup.cfg)
 six==1.16.0
     # via fs