diff --git a/release.sh b/release.sh
index 18474d0..c5e9b32 100755
--- a/release.sh
+++ b/release.sh
@@ -40,7 +40,7 @@ step "2. Agent and setup tool"
 step "3. Engine source and wheel"
 # The wheel is built with the checkout's own interpreter; requires-python is a
 # statement about the SHOP PC, which setup enforces when it finds Python there.
-.venv/bin/python -m pip wheel --no-deps --no-build-isolation -q -w "$STAGE/engine-src" . 2>&1 | grep -v "DEPRECATION\|WARNING: Ignoring" || true
+.venv/bin/python -m pip wheel --no-deps --ignore-requires-python -q -w "$STAGE/engine-src" . 2>&1 | grep -v "DEPRECATION\|WARNING: Ignoring" || true
 ls "$STAGE"/engine-src/behavision-*.whl >/dev/null || { echo "wheel was not built" >&2; exit 1; }
 cp pyproject.toml requirements.txt "$STAGE/engine-src/"
 mkdir -p "$STAGE/engine-src/config" && cp config/default.yaml "$STAGE/engine-src/config/"