diff --git a/.github/workflows/cibuildwheel.yml b/.github/workflows/cibuildwheel.yml
index 22f5515..e6f57c7 100644
--- a/.github/workflows/cibuildwheel.yml
+++ b/.github/workflows/cibuildwheel.yml
@@ -77,7 +77,7 @@ jobs:
       - name: Test wheel
         run: |
           FAILED=false
-          pypy -m pip install -r test_requirements.txt
+          pypy -m pip install -r test_requirements.txt build
           pypy -m pytest vmprof -v || FAILED=true
           pypy -m pytest jitlog -v || FAILED=true
           if [ "FAILED" == true ]; then exit 1; fi
@@ -87,7 +87,14 @@ jobs:
           # vmprof-0.4.15-pp3-none-any.whl
           rename 's/py3/pp3/' vmprof-*.whl
 
+      - name: Build sdist
+        run: |
+          pypy -m build --sdist .
+
+
       - uses: actions/upload-artifact@v4
         with:
-          path: vmprof*.whl
+          path: |
+            vmprof*.whl
+            dist/*.tar.gz
 
diff --git a/setup.py b/setup.py
index b621284..40a40b6 100644
--- a/setup.py
+++ b/setup.py
@@ -111,7 +111,7 @@ def run(self):
     name='vmprof',
     author='vmprof team',
     author_email='fijal@baroquesoftware.com',
-    version="0.4.18",
+    version="0.4.18.1",
     packages=find_packages(),
     description="Python's vmprof client",
     long_description='See https://vmprof.readthedocs.org/',
@@ -123,7 +123,7 @@ def run(self):
         'pytz',
         'colorama',
     ] + extra_install_requires,
-    python_requires='>=3.6, <3.12',
+    python_requires='<3.12',
     tests_require=['pytest','cffi','hypothesis'],
     entry_points = {
         'console_scripts': [