diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0459e85b..3c6fe602 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,8 +4,11 @@ on:
   merge_group:
   push:
     branches-ignore:
-    # disabled for jaraco/skeleton#103
-    # - gh-readonly-queue/**  # Temporary merge queue-related GH-made branches
+    # temporary GH branches relating to merge queues (jaraco/skeleton#93)
+    - gh-readonly-queue/**
+    tags:
+    # required if branches-ignore is supplied (jaraco/skeleton#103)
+    - '**'
   pull_request:
 
 permissions:
@@ -31,7 +34,6 @@ jobs:
       matrix:
         python:
         - "3.8"
-        - "3.11"
         - "3.12"
         platform:
         - ubuntu-latest
@@ -42,6 +44,8 @@ jobs:
           platform: ubuntu-latest
         - python: "3.10"
           platform: ubuntu-latest
+        - python: "3.11"
+          platform: ubuntu-latest
         # disabled (https://github.com/jaraco/cssutils/issues/39)
         # - python: pypy3.10
         #   platform: ubuntu-latest
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 68489063..85dfea9d 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,3 +10,7 @@ build:
   os: ubuntu-lts-latest
   tools:
     python: latest
+  # post-checkout job to ensure the clone isn't shallow jaraco/skeleton#114
+  jobs:
+    post_checkout:
+    - git fetch --unshallow || true
diff --git a/ruff.toml b/ruff.toml
index 48f6d456..07f79e18 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -1,4 +1,8 @@
 [lint]
+extend-select = [
+	"C901",
+	"W",
+]
 ignore = [
 	# https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules
 	"W191",
diff --git a/setup.cfg b/setup.cfg
index 71b4dcf5..c1e98a15 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -41,9 +41,7 @@ testing =
 	pytest >= 6
 	pytest-checkdocs >= 2.4
 	pytest-cov
-	pytest-mypy; \
-		# workaround for jaraco/skeleton#22
-		python_implementation != "PyPy"
+	pytest-mypy
 	pytest-enabler >= 2.2
 	pytest-ruff >= 0.2.1
 
@@ -58,8 +56,6 @@ testing =
 docs =
 	# upstream
 	sphinx >= 3.5
-	# workaround for sphinx/sphinx-doc#11662
-	sphinx < 7.2.5
 	jaraco.packaging >= 9.3
 	rst.linker >= 1.9
 	furo
diff --git a/tox.ini b/tox.ini
index 331eeed9..4c39a5b1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ extras =
 [testenv:diffcov]
 description = run tests and check that diff from main is covered
 deps =
+	{[testenv]deps}
 	diff-cover
 commands =
 	pytest {posargs} --cov-report xml