diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 06c2c10..339dc12 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -46,7 +46,9 @@ jobs:
           submodules: recursive
 
       - name: Build sdist
-        run: pipx run build --sdist
+        run: |
+          pipx --version
+          pipx run build --sdist
 
       - uses: actions/upload-artifact@v3
         with:
diff --git a/MANIFEST.in b/MANIFEST.in
index c867526..2d1a31b 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -32,6 +32,7 @@ include configure.py
 include Makefile.in
 include aksetup_helper.py
 include README_SETUP.txt
+include CMakeLists.txt
 
 include README.rst
 include CITATION.cff