diff --git a/README.rst b/README.rst
index c0ad8247033..aa764c85647 100644
--- a/README.rst
+++ b/README.rst
@@ -1,4 +1,4 @@
-Abjad 3.14
+Abjad 3.15
 ==========
 
 Abjad helps composers build up complex pieces of music notation in iterative and
diff --git a/abjad/_version.py b/abjad/_version.py
index 71d3af6b560..8894ab91389 100644
--- a/abjad/_version.py
+++ b/abjad/_version.py
@@ -1,3 +1,3 @@
-__version_info__ = (3, 14)
+__version_info__ = (3, 15)
 __version__ = ".".join(str(_) for _ in __version_info__[:2])
 __version__ += "".join(__version_info__[2:])
diff --git a/docs/source/conf.py b/docs/source/conf.py
index f674e36a29d..12587e8798c 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -15,9 +15,6 @@
     "sphinx.ext.graphviz",
     "sphinx.ext.intersphinx",
     "sphinx.ext.todo",
-    # temporarily comment out sphinx.ext.viewcode when heavily editing docs;
-    # prevents "highlighting module code ..." pass on every doc build;
-    # uncomment sphinx.ext.viewcode when building official release:
     "sphinx.ext.viewcode",
     "sphinx_autodoc_typehints",
     "uqbar.sphinx.api",
@@ -39,7 +36,7 @@
     # navigation_depth=1 makes sidebar completely flat;
     # leave flat navigation in place forever:
     "navigation_depth": 1,
-    "style_nav_header_background": "#880088",
+    "style_nav_header_background": "#9922bb",
 }
 html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 project = "Abjad"
diff --git a/setup.py b/setup.py
index ebaae8119cc..501630996ff 100644
--- a/setup.py
+++ b/setup.py
@@ -51,14 +51,14 @@ def check_python_version(abjad_version):
 ]
 
 extras_require = {
-    "nauert": ["abjad-ext-nauert>=3.14"],
-    "rmakers": ["abjad-ext-rmakers>=3.14"],
+    "nauert": ["abjad-ext-nauert>=3.15"],
+    "rmakers": ["abjad-ext-rmakers>=3.15"],
     "dev": [
-        "black>=22.10.0",
-        "flake8>=5.0.4",
-        "isort>=5.10.1",
-        "mypy>=0.982",
-        "pytest>=7.2.0",
+        "black>=22.12.0",
+        "flake8>=6.0.0",
+        "isort>=5.11.4",
+        "mypy>=0.991",
+        "pytest>=7.2.1",
         "pytest-cov>=4.0.0",
         "pytest-helpers-namespace>=2021.12.29",
         "sphinx-autodoc-typehints>=1.19.4",
@@ -75,7 +75,7 @@ def check_python_version(abjad_version):
 install_requires = [
     "ply>=3.11",
     "roman>=1.4",
-    "uqbar>=0.6.4",
+    "uqbar>=0.6.8",
 ]
 
 if __name__ == "__main__":