diff --git a/.semaphore/semaphore.yml b/.semaphore/semaphore.yml
index f3f8956c3..fc76fd059 100644
--- a/.semaphore/semaphore.yml
+++ b/.semaphore/semaphore.yml
@@ -122,7 +122,7 @@ blocks:
       jobs:
         - name: Build
           commands:
-            - ./tools/build-manylinux.sh "${LIBRDKAFKA_VERSION#v}"
+            - ./tools/wheels/build-wheels.sh "${LIBRDKAFKA_VERSION#v}" wheelhouse
             - tar -czf wheelhouse-linux-${ARCH}.tgz wheelhouse
             - artifact push workflow wheelhouse-linux-${ARCH}.tgz --destination artifacts/wheels-${OS_NAME}-${ARCH}.tgz/
   - name: "Wheels: Linux x64"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c4342f4b..a03700b17 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## v2.12.0b1 - 2025-10-01
+
 ### Added
 
 - AsyncIO Producer (experimental): Introduces `confluent_kafka.aio.AIOProducer` for
diff --git a/tools/wheels/build-wheels.bat b/tools/wheels/build-wheels.bat
index ddb1bd15b..0fcfaa2a9 100644
--- a/tools/wheels/build-wheels.bat
+++ b/tools/wheels/build-wheels.bat
@@ -16,7 +16,7 @@ echo on
 set CIBW_BUILD=cp37-%BW_ARCH% cp38-%BW_ARCH% cp39-%BW_ARCH% cp310-%BW_ARCH% cp311-%BW_ARCH% cp312-%BW_ARCH% cp313-%BW_ARCH%
 set CIBW_BEFORE_BUILD=python -m pip install delvewheel==1.1.4
 set CIBW_TEST_REQUIRES=pytest
-set CIBW_TEST_COMMAND=pytest {project}\tests\test_Producer.py
+set CIBW_TEST_COMMAND=pytest {project}\tests\test_error.py
 rem set CIBW_BUILD_VERBOSITY=3
 set include=%cd%\%DEST%\build\native\include
 set lib=%cd%\%DEST%\build\native\lib\win\%ARCH%\win-%ARCH%-Release\v142
diff --git a/tools/wheels/build-wheels.sh b/tools/wheels/build-wheels.sh
index d9af094c9..bf6e0e21f 100755
--- a/tools/wheels/build-wheels.sh
+++ b/tools/wheels/build-wheels.sh
@@ -10,7 +10,7 @@ this_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 export CIBW_SKIP="pp* cp27-* cp35-* cp36-* *i686 *musllinux* $CIBW_SKIP"
 # Run a simple test suite
 export CIBW_TEST_REQUIRES="pytest"
-export CIBW_TEST_COMMAND="pytest {project}/tests/test_Producer.py"
+export CIBW_TEST_COMMAND="pytest {project}/tests/test_error.py"
 export CIBW_MANYLINUX_X86_64_IMAGE="manylinux_2_28"
 export CIBW_MANYLINUX_AARCH64_IMAGE="manylinux_2_28"