diff --git a/.github/workflows/cibuildwheel.yml b/.github/workflows/cibuildwheel.yml
index 984222266871..ba9365b3f7a6 100644
--- a/.github/workflows/cibuildwheel.yml
+++ b/.github/workflows/cibuildwheel.yml
@@ -28,7 +28,7 @@ jobs:
 
       - name: Install cibuildwheel
         run: |
-          python -m pip install cibuildwheel==1.5.5
+          python -m pip install cibuildwheel==1.6.3
 
       - name: Copy setup.cfg to configure wheel
         run: |
@@ -39,7 +39,7 @@ jobs:
           python -m cibuildwheel --output-dir dist
         env:
           CIBW_BUILD: "cp3?-*"
-          CIBW_SKIP: "cp35-* cp36-*"
+          CIBW_SKIP: "cp35-* cp36-* cp39-*"
           CIBW_MANYLINUX_X86_64_IMAGE: manylinux1
           CIBW_MANYLINUX_I686_IMAGE: manylinux1
           CIBW_BEFORE_BUILD: pip install certifi numpy==1.16