diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index c0edf34c7c..4efa9e6631 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -45,7 +45,7 @@ jobs:
            git fetch --prune --unshallow
 
       - name: Build wheels for CPython
-        uses: pypa/cibuildwheel@v2.20.0
+        uses: pypa/cibuildwheel@v2.21.0
         with:
           output-dir: dist
         env:
diff --git a/MANIFEST.in b/MANIFEST.in
index 26690d661b..dfe51682d5 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -10,6 +10,8 @@ include pyart/testing/registry.txt
 include pyart/correct/src/UWASHINGTON_4DD_README
 include pyart/__check_build/README
 include pyart/graph/balance-rgb.txt
+include pyart/graph/chase-spectral-rgb.txt
+include pyart/graph/spectral-extended-rgb.txt
 include versioneer.py
 include pyart/_version.py
 include pyart/testing/data/*