diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 5d34de9..bd521b7 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,7 +6,7 @@ jobs:
   black:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: psf/black@stable
         with:
           options: "--check --color --diff"
diff --git a/catkin_tools_document/builders.py b/catkin_tools_document/builders.py
index 38aae2f..aa7ef59 100644
--- a/catkin_tools_document/builders.py
+++ b/catkin_tools_document/builders.py
@@ -129,7 +129,6 @@ def pydoctor(conf, package, deps, doc_deps, output_path, source_path, docs_build
 
 
 def epydoc(conf, package, deps, doc_deps, output_path, source_path, docs_build_path, job_env):
-
     epydoc_exe = which("epydoc")
     if epydoc_exe is None:
         # If epydoc is missing, fall back to pydoctor.
diff --git a/catkin_tools_document/document.py b/catkin_tools_document/document.py
index 754a477..a5adbf1 100644
--- a/catkin_tools_document/document.py
+++ b/catkin_tools_document/document.py
@@ -246,7 +246,6 @@ def document_workspace(
 
     # Construct jobs
     for pkg_path, pkg in packages_to_be_documented:
-
         # Get actual execution deps
         deps = [p.name for _, p in get_cached_recursive_build_depends_in_workspace(pkg, packages_to_be_documented)]
         doc_deps = [