diff --git a/.github/workflows/release_wheels.yml b/.github/workflows/release_wheels.yml
index 26ac79c2c..ec0d11a07 100644
--- a/.github/workflows/release_wheels.yml
+++ b/.github/workflows/release_wheels.yml
@@ -29,6 +29,7 @@ jobs:
               build: "cp36-win_amd64 cp37-win_amd64 cp38-win_amd64 cp39-win_amd64 cp310-win_amd64"
     env:
       CIBW_BUILD: "${{ matrix.cibw.build || '*' }}"
+      CIBW_SKIP: "*musllinux*"
       CIBW_ARCHS: "${{ matrix.cibw.arch || 'auto' }}"
       CIBW_MANYLINUX_X86_64_IMAGE: "${{ matrix.cibw.manylinux_image }}"
       CIBW_BEFORE_BUILD_MACOS: "brew install libomp llvm"
diff --git a/.github/workflows/testing_wheels.yml b/.github/workflows/testing_wheels.yml
index 95271dad1..a28896675 100644
--- a/.github/workflows/testing_wheels.yml
+++ b/.github/workflows/testing_wheels.yml
@@ -20,20 +20,21 @@ jobs:
           - os: macos-10.15
             name: mac
             cibw:
-              build: "cp36* cp37* cp38* cp39* cp310*"
+              build: "cp310*"
           - os: ubuntu-20.04
             name: manylinux2014
             cibw:
               arch: x86_64
-              build: "cp36* cp37* cp38* cp39* cp310*"
+              build: "cp310*"
               manylinux_image: manylinux2014
           - os: windows-2019
             name: win_amd64
             architecture: x64
             cibw:
-              build: "cp36-win_amd64 cp37-win_amd64 cp38-win_amd64 cp39-win_amd64 cp310-win_amd64"
+              build: "cp310-win_amd64"
     env:
       CIBW_BUILD: "${{ matrix.cibw.build || '*' }}"
+      CIBW_SKIP: "*musllinux*"
       CIBW_ARCHS: "${{ matrix.cibw.arch || 'auto' }}"
       CIBW_MANYLINUX_X86_64_IMAGE: "${{ matrix.cibw.manylinux_image }}"
       CIBW_BEFORE_BUILD_MACOS: "brew install libomp llvm"
@@ -51,7 +52,7 @@ jobs:
       - uses: actions/setup-python@v2
 
       - name: Install cibuildwheel and twine
-        run: python -m pip install cibuildwheel==2.0.1
+        run: python -m pip install cibuildwheel==2.2.2
 
       - name: Run C++ tests
         run: bash build_tools/test_libs.sh
diff --git a/pybind_interface/GetPybind11.cmake b/pybind_interface/GetPybind11.cmake
index f93c2bf61..e60d20daf 100644
--- a/pybind_interface/GetPybind11.cmake
+++ b/pybind_interface/GetPybind11.cmake
@@ -1,6 +1,6 @@
 include(FetchContent)
 
-set(MIN_PYBIND_VERSION "2.2.4")
+set(MIN_PYBIND_VERSION "2.8.1")
 FetchContent_Declare(
   pybind11
   GIT_REPOSITORY https://github.com/pybind/pybind11
diff --git a/requirements.txt b/requirements.txt
index 0a95d64c7..981f22a27 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 absl-py
 cirq-core
-numpy~=1.16
+numpy~=1.21
 pybind11
 typing_extensions