diff --git a/.github/workflows/python_ci.yml b/.github/workflows/python_ci.yml
index 447a76d..8bbb3e0 100644
--- a/.github/workflows/python_ci.yml
+++ b/.github/workflows/python_ci.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: "windows-2019"
     continue-on-error: ${{ matrix.config.experimental }}
     env:
-      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-beta.4,pypy-3.6,pypy-3.7,pypy-3.8,pypy-3.9'
+      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-rc.1,pypy-3.6,pypy-3.7,pypy-3.8,pypy-3.9'
 
     strategy:
       fail-fast: False
@@ -34,11 +34,11 @@ jobs:
           - {python-version: "3.9", testenvs: "py39,build", experimental: False}
           - {python-version: "3.10", testenvs: "py310,build", experimental: False}
           - {python-version: "3.11", testenvs: "py311,build", experimental: False}
-          - {python-version: "3.12.0-beta.4", testenvs: "py312-dev,build", experimental: True}
-          - {python-version: "pypy-3.6", testenvs: "pypy36,build", experimental: False}
+          - {python-version: "3.12.0-rc.1", testenvs: "py312-dev,build", experimental: True}
+          - {python-version: "pypy-3.6", testenvs: "pypy36", experimental: False}
           - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: True}
           - {python-version: "pypy-3.8", testenvs: "pypy38,build", experimental: True}
-          - {python-version: "pypy-3.9", testenvs: "pypy39", experimental: True}
+          - {python-version: "pypy-3.9", testenvs: "pypy39,build", experimental: True}
 
     steps:
       - name: Checkout 🛎️
diff --git a/.github/workflows/python_ci_linux.yml b/.github/workflows/python_ci_linux.yml
index 9169a87..7535522 100644
--- a/.github/workflows/python_ci_linux.yml
+++ b/.github/workflows/python_ci_linux.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: "ubuntu-20.04"
     continue-on-error: ${{ matrix.config.experimental }}
     env:
-      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-beta.4,pypy-3.6,pypy-3.7,pypy-3.8,pypy-3.9'
+      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-rc.1,pypy-3.6,pypy-3.7,pypy-3.8,pypy-3.9'
 
     strategy:
       fail-fast: False
@@ -35,11 +35,11 @@ jobs:
           - {python-version: "3.9", testenvs: "py39,build", experimental: False}
           - {python-version: "3.10", testenvs: "py310,build", experimental: False}
           - {python-version: "3.11", testenvs: "py311,build", experimental: False}
-          - {python-version: "3.12.0-beta.4", testenvs: "py312-dev,build", experimental: True}
+          - {python-version: "3.12.0-rc.1", testenvs: "py312-dev,build", experimental: True}
           - {python-version: "pypy-3.6", testenvs: "pypy36,build", experimental: False}
           - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: True}
           - {python-version: "pypy-3.8", testenvs: "pypy38,build", experimental: True}
-          - {python-version: "pypy-3.9", testenvs: "pypy39", experimental: True}
+          - {python-version: "pypy-3.9", testenvs: "pypy39,build", experimental: True}
 
     steps:
       - name: Checkout 🛎️
diff --git a/.github/workflows/python_ci_macos.yml b/.github/workflows/python_ci_macos.yml
index c420401..e9420ea 100644
--- a/.github/workflows/python_ci_macos.yml
+++ b/.github/workflows/python_ci_macos.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: "macos-latest"
     continue-on-error: ${{ matrix.config.experimental }}
     env:
-      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-beta.4,pypy-3.7,pypy-3.8,pypy-3.9'
+      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10,3.11,3.12.0-rc.1,pypy-3.7,pypy-3.8,pypy-3.9'
 
     strategy:
       fail-fast: False
@@ -34,10 +34,10 @@ jobs:
           - {python-version: "3.9", testenvs: "py39,build", experimental: False}
           - {python-version: "3.10", testenvs: "py310,build", experimental: False}
           - {python-version: "3.11", testenvs: "py311,build", experimental: False}
-          - {python-version: "3.12.0-beta.4", testenvs: "py312-dev,build", experimental: True}
+          - {python-version: "3.12.0-rc.1", testenvs: "py312-dev,build", experimental: True}
           - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: True}
           - {python-version: "pypy-3.8", testenvs: "pypy38,build", experimental: True}
-          - {python-version: "pypy-3.9", testenvs: "pypy39", experimental: True}
+          - {python-version: "pypy-3.9", testenvs: "pypy39,build", experimental: True}
 
     steps:
       - name: Checkout 🛎️
diff --git a/tox.ini b/tox.ini
index 9fd8c6a..10d1329 100644
--- a/tox.ini
+++ b/tox.ini
@@ -88,6 +88,7 @@ commands = sphinx-build -M {env:SPHINX_BUILDER:html} . ./build {posargs}
 setenv =
     PYTHONDEVMODE=1
     PIP_DISABLE_PIP_VERSION_CHECK=1
+    PIP_PREFER_BINARY=1
 skip_install = True
 changedir = {toxinidir}
 deps =
@@ -204,6 +205,7 @@ plugins = coverage_pyver_pragma
 
 [coverage:report]
 fail_under = 100
+show_missing = True
 exclude_lines =
     raise AssertionError
     raise NotImplementedError