diff --git a/.github/workflows/build-pipdeptree.yml b/.github/workflows/build-pipdeptree.yml
index 8dfc3b23b16d..f910ff97f578 100644
--- a/.github/workflows/build-pipdeptree.yml
+++ b/.github/workflows/build-pipdeptree.yml
@@ -78,20 +78,27 @@ jobs:
           CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
           CIBW_BEFORE_ALL_LINUX: >-
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+          # 4.2.12 opts into the limited API through PIPDEPTREE_ABI3=1 (meson.build) instead of
+          # the cp315 cibuildwheel override earlier releases carried in pyproject.toml; the
+          # variable is simply ignored by those, whose override still applies.
           # The checkout carries no git history, so tools/version.py can't derive the version
           # from tags; PIPDEPTREE_VERSION is the override switch upstream's own CI uses for the
           # same reason (a container build over a checkout it doesn't own).
           CIBW_ENVIRONMENT_LINUX: >-
             PATH=$HOME/.cargo/bin:$PATH
             PIPDEPTREE_VERSION=${{ env.PIPDEPTREE_VERSION }}
+            PIPDEPTREE_ABI3=${{ matrix.python == 'cp315' && '1' || '0' }}
             PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
           # --graph-output/--output=graphviz-* shell out to the `dot` binary.
           CIBW_BEFORE_TEST_LINUX: dnf -y install graphviz
           # pytest-cov pulls in coverage: test_render_explicit_extras renders pluggy's
           # "testing" extra, which lists coverage as a requirement. pluggy 1.7.0 dropped
           # its extras, so older pipdeptree tests need an earlier pluggy.
-          CIBW_TEST_REQUIRES: pytest pytest-cov pluggy<1.7
-          CIBW_TEST_SOURCES: tests docs
+          # pytest-mock supplies the `mocker` fixture tests/tools/test_release.py uses.
+          CIBW_TEST_REQUIRES: pytest pytest-cov pytest-mock pluggy<1.7
+          # tests/tools/ (new in 4.2.10) imports the tools package (tools/release.py,
+          # tools/check_release_wheels.py), which has to be staged next to the tests.
+          CIBW_TEST_SOURCES: tests docs tools
           # tests/test_build_version.py (new after 4.2.3) reads build.rs/tools/version.py off the
           # project root and a scratch git repo to check the version-derivation tooling itself;
           # CIBW_TEST_SOURCES stages only tests/docs, so it has no wheel behavior to verify here.
diff --git a/docs/packages/pipdeptree.yaml b/docs/packages/pipdeptree.yaml
index b6c2068edf9b..d6c6fd01d24f 100644
--- a/docs/packages/pipdeptree.yaml
+++ b/docs/packages/pipdeptree.yaml
@@ -39,6 +39,53 @@ versions:
     sha256: b914d1daa4b53a2b6cd403a5ccebde4fb37fd0b74f70b3ec90fb11cf2222741f
     requires-python: '>=3.10'
 - version: 4.2.6
+  tag: pipdeptree-v4.2.6-20261030150900
+  files:
+  - filename: pipdeptree-4.2.6-cp311-abi3-manylinux_2_39_riscv64.whl
+    sha256: 4e24c572de580c38ed3d8766c11e0b7615add846eab3e0d587321e764e741f5b
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.6-cp314-cp314t-manylinux_2_39_riscv64.whl
+    sha256: 88bfe65c5a1fad6d6c3e11b6192b4326bb2f80c5a83afcd2483664e4f325cc0a
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.6-cp315-cp315t-manylinux_2_39_riscv64.whl
+    sha256: 2e8128cbbcc1ddb252f9c49008fda1f4a46450fe8d4e36732794303a9eec1284
+    requires-python: '>=3.11'
 - version: 4.2.7
+  tag: pipdeptree-v4.2.7-20261030150826
+  files:
+  - filename: pipdeptree-4.2.7-cp311-abi3-manylinux_2_39_riscv64.whl
+    sha256: 92add836e23945e3d1630474b98b75b7c50a6b6cb272ab32ee2d1cccafcf5314
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.7-cp314-cp314t-manylinux_2_39_riscv64.whl
+    sha256: ed5c8876ee95282adfc583490c2a6af24eba6ff368f75ba94fa60d0e7a8b7c7a
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.7-cp315-cp315t-manylinux_2_39_riscv64.whl
+    sha256: a881a9177277d1280a6b37ae6e863f7c646ae68243a89dabf0b757de722ad0d1
+    requires-python: '>=3.11'
 - version: 4.2.8
+  tag: pipdeptree-v4.2.8-20261030150745
+  files:
+  - filename: pipdeptree-4.2.8-cp311-abi3-manylinux_2_39_riscv64.whl
+    sha256: 0f09eb820f9da7cd85881970c5471d1595d2e20ad2863b99eb5b43f78bbb03d9
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.8-cp314-cp314t-manylinux_2_39_riscv64.whl
+    sha256: 6ca01ee0dac54ba967939b8cf87b035e431b4a7c386b9a6d74ddbecc05b13bce
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.8-cp315-cp315t-manylinux_2_39_riscv64.whl
+    sha256: e18033b8c37ce0bf4aeca12345548771d036f7f80231ea344ba0f372c0a37347
+    requires-python: '>=3.11'
 - version: 4.2.9
+  tag: pipdeptree-v4.2.9-20261030150938
+  files:
+  - filename: pipdeptree-4.2.9-cp311-abi3-manylinux_2_39_riscv64.whl
+    sha256: 8d2db4136be608627f168abc2194431df7b2dc1c04a9b9e64bd6ead07b9076ee
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.9-cp314-cp314t-manylinux_2_39_riscv64.whl
+    sha256: 633a714d597703f5bc4484abaf86ad3fcd5eba974676d9675b58d53ede5e8c3a
+    requires-python: '>=3.11'
+  - filename: pipdeptree-4.2.9-cp315-cp315t-manylinux_2_39_riscv64.whl
+    sha256: 2bdfd463636e15d2eecc719d48cfd9df715654251ec090f9f85ee8accdf062ea
+    requires-python: '>=3.11'
+- version: 4.2.10
+- version: 4.2.11
+- version: 4.2.12