diff --git a/ci.sh b/ci.sh
index 17c2cc4..f167c8d 100755
--- a/ci.sh
+++ b/ci.sh
@@ -4,11 +4,11 @@ set -exu -o pipefail
 
 python -c "import sys, struct, ssl; print('#' * 70); print('python:', sys.version); print('version_info:', sys.version_info); print('bits:', struct.calcsize('P') * 8); print('openssl:', ssl.OPENSSL_VERSION, ssl.OPENSSL_VERSION_INFO); print('#' * 70)"
 
-python -m pip install -U pip setuptools wheel
+python -m pip install -U pip build
 python -m pip --version
 
-python setup.py sdist --formats=zip
-python -m pip install dist/*.zip
+python -m build --sdist
+python -m pip install dist/*.tar.gz
 
 # Actual tests
 
diff --git a/lint.sh b/lint.sh
index 2b7f6a0..90162c8 100755
--- a/lint.sh
+++ b/lint.sh
@@ -4,7 +4,7 @@ set -exu -o pipefail
 
 python -c "import sys, struct, ssl; print('#' * 70); print('python:', sys.version); print('version_info:', sys.version_info); print('bits:', struct.calcsize('P') * 8); print('openssl:', ssl.OPENSSL_VERSION, ssl.OPENSSL_VERSION_INFO); print('#' * 70)"
 
-python -m pip install -U pip setuptools wheel
+python -m pip install -U pip
 python -m pip --version
 
 # Dependencies