diff --git a/pyproject.toml b/pyproject.toml
index d125502..d7b9891 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["flit_core >=3.8,<4"]
+requires = ["flit_core >=3.8,<5"]
 build-backend = "flit_core.buildapi"
 
 [tool.libdoc2testbench]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 90b61b0..5afab7d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,15 +4,15 @@
 #
 #    pip-compile --extra=dev --output-file=requirements-dev.txt pyproject.toml
 #
-astroid==4.1.2
+astroid==4.3.0
     # via pylint
 build==1.5.0
     # via
     #   check-manifest
     #   robotframework-libdoc2testbench (pyproject.toml)
-certifi==2026.6.17
+certifi==2026.7.22
     # via requests
-charset-normalizer==3.4.9
+charset-normalizer==3.5.0
     # via
     #   docformatter
     #   requests
@@ -30,7 +30,7 @@ colorama==0.4.6
     #   click
     #   pylint
     #   pytest
-coverage[toml]==7.15.2
+coverage[toml]==7.15.4
     # via pytest-cov
 dill==0.4.1
     # via pylint
@@ -40,9 +40,9 @@ docutils==0.23
     # via flit
 exceptiongroup==1.3.1
     # via pytest
-flit==3.12.0
+flit==4.0.2
     # via robotframework-libdoc2testbench (pyproject.toml)
-flit-core==3.12.0
+flit-core==4.0.2
     # via flit
 idna==3.18
     # via requests
@@ -58,7 +58,7 @@ isort==8.0.1
     # via pylint
 jinja2==3.1.6
     # via xsdata
-librt==0.13.0
+librt==0.15.0
     # via mypy
 markupsafe==3.0.3
     # via jinja2
@@ -68,13 +68,13 @@ mypy==2.3.0
     # via robotframework-libdoc2testbench (pyproject.toml)
 mypy-extensions==1.1.0
     # via mypy
-packaging==26.2
+packaging==26.3
     # via
     #   build
     #   pytest
 pathspec==1.1.1
     # via mypy
-platformdirs==4.10.1
+platformdirs==4.11.3
     # via pylint
 pluggy==1.6.0
     # via
@@ -82,7 +82,7 @@ pluggy==1.6.0
     #   pytest-cov
 pygments==2.20.0
     # via pytest
-pylint==4.0.6
+pylint==4.0.7
     # via robotframework-libdoc2testbench (pyproject.toml)
 pyproject-hooks==1.2.0
     # via build
@@ -98,7 +98,7 @@ requests==2.34.2
     # via flit
 robotframework==7.4.2
     # via robotframework-libdoc2testbench (pyproject.toml)
-ruff==0.15.22
+ruff==0.16.3
     # via
     #   robotframework-libdoc2testbench (pyproject.toml)
     #   xsdata