@@ -111,9 +111,15 @@ jobs:
           # protobuf (Google's package, used for legacy conformance coverage)
           # has no riscv64 wheel on public PyPI yet.
           CIBW_TEST_ENVIRONMENT: PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple/
+          # On cp314t protobuf's upb extension (google._upb._message) has not
+          # declared free-threading support, so importing it re-enables the GIL
+          # and warns; pyproject.toml's filterwarnings = error would turn that
+          # into a collection error. The warning only means the GIL is on, which
+          # is the safe state, so it is ignored while every test still runs.
           CIBW_TEST_COMMAND: >-
             python -c "import protovalidate._protovalidate as m; assert m.__file__.endswith('.so'), m.__file__" &&
             python -m pytest test -v
+            -W "ignore:The global interpreter lock (GIL) has been enabled:RuntimeWarning"
 
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
         with:
 
@@ -12,3 +12,4 @@ versions:
   - filename: protovalidate-2.0.0-cp314-cp314t-manylinux_2_39_riscv64.whl
     sha256: d5c4afdd55781255485e6aacfee3bfecbaa10d73948e9075933eb7b59fb41cf6
     requires-python: '>=3.10'
+- version: 2.1.0
@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ludovic Henry <git@ludovic.dev>
+Date: Thu, 27 Aug 2026 00:00:00 +0000
+Subject: [PATCH] pyproject: list vendored C++ licence files in
+ [project].license-files
+
+protovalidate._protovalidate statically links six vendored C++ projects
+(abseil-cpp, antlr4, cel-cpp, protobuf + its bundled utf8_range, re2,
+protovalidate-cc) compiled from crates/protovalidate-rs/build.rs, but
+[project].license-files only names the package's own root LICENSE.
+maturin has no default glob for a PEP 639 project (gotcha 105/146 in
+this repo's porting skill), so every published wheel - on every
+platform, not just riscv64 - ships none of the six licence texts the
+compiled binary actually requires. All six are permissive (Apache-2.0
+x3, BSD-3-Clause x3 for protobuf/antlr4/re2, plus utf8_range's MIT),
+so this only adds licence-files entries; no GPL text is involved.
+
+Upstream-Status: To upstream [not submitted: this session's policy is to not open issues/PRs on third-party repos]
+
+Signed-off-by: Ludovic Henry <git@ludovic.dev>
+---
+ pyproject.toml | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/pyproject.toml b/pyproject.toml
+index ea18dff..044ad49 100644
+--- a/pyproject.toml
++++ b/pyproject.toml
+@@ -5,7 +5,16 @@ description = "Protocol Buffer Validation for Python"
+ readme = "README.md"
+ requires-python = ">=3.11"
+ license = "Apache-2.0"
+-license-files = ["LICENSE"]
++license-files = [
++  "LICENSE",
++  "crates/protovalidate-rs/third_party/abseil-cpp/LICENSE",
++  "crates/protovalidate-rs/third_party/antlr4/LICENSE.txt",
++  "crates/protovalidate-rs/third_party/cel-cpp/LICENSE",
++  "crates/protovalidate-rs/third_party/protobuf/LICENSE",
++  "crates/protovalidate-rs/third_party/protobuf/third_party/utf8_range/LICENSE",
++  "crates/protovalidate-rs/third_party/protovalidate-cc/LICENSE",
++  "crates/protovalidate-rs/third_party/re2/LICENSE",
++]
+ keywords = ["protobuf", "protocol buffer", "validate"]
+ classifiers = [
+   "Operating System :: OS Independent",
+--
+2.51.0
+