diff --git a/build.bat b/build.bat
index 1c76f3f..a4ff578 100644
--- a/build.bat
+++ b/build.bat
@@ -1,8 +1,8 @@
 cd docker
-REM docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py39 -f py39/Dockerfile .
-REM docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py38 -f py38/Dockerfile .
-REM docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py37 -f py37/Dockerfile .
-REM docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py36 -f py36/Dockerfile .
+docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py39 -f py39/Dockerfile .
+docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py38 -f py38/Dockerfile .
+docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py37 -f py37/Dockerfile .
+docker buildx build --pull --load --platform linux/arm/v7 -t kumatea/ext:py36 -f py36/Dockerfile .
 
 REM docker image prune
 
diff --git a/docker/build-wheels.sh b/docker/build-wheels.sh
index cf6c26b..dfd4dff 100644
--- a/docker/build-wheels.sh
+++ b/docker/build-wheels.sh
@@ -3,7 +3,16 @@
 set -ex
 
 # pip config set global.index-url https://mirrors.vmatrix.org.cn/pypi/web/simple
+
+if [ $(uname -m) = 'armv7l' ]; then
+  sed -i 's/scikit-learn//g' /root/packages-stdln.txt
+fi
+
 pip install -U -v -r /root/packages-stdln.txt -f https://ext.maku.ml/wheels.html -f https://torch.maku.ml/whl/stable.html
-pip install -U -v -r /root/packages-deps.txt -f https://ext.maku.ml/wheels.html -f https://torch.maku.ml/whl/stable.html
+
+if [ $(uname -m) = 'aarch64' ]; then
+  pip install -U -v -r /root/packages-deps.txt -f https://ext.maku.ml/wheels.html -f https://torch.maku.ml/whl/stable.html
+fi
+
 mkdir /root/whl
 cp -a $(find /root/.cache/pip | grep whl | tr '\n' ' ') /root/whl/ || echo "No new whl is built!"
diff --git a/whl/stable.html b/whl/stable.html
index 2743679..9ffe7af 100644
--- a/whl/stable.html
+++ b/whl/stable.html
@@ -1,3 +1,6 @@
+<a href="https://github.com/KumaTea/ext-whl/releases/download/210330/numpy-1.20.2-cp37-cp37m-linux_armv7l.whl">numpy-1.20.2-cp37-cp37m-linux_armv7l.whl</a><br>
+<a href="https://github.com/KumaTea/ext-whl/releases/download/210330/numpy-1.20.2-cp38-cp38-linux_armv7l.whl">numpy-1.20.2-cp38-cp38-linux_armv7l.whl</a><br>
+<a href="https://github.com/KumaTea/ext-whl/releases/download/210330/numpy-1.20.2-cp39-cp39-linux_armv7l.whl">numpy-1.20.2-cp39-cp39-linux_armv7l.whl</a><br>
 <a href="https://github.com/KumaTea/ext-whl/releases/download/210321/argon2_cffi-20.1.0-cp36-abi3-linux_aarch64.whl">argon2_cffi-20.1.0-cp36-abi3-linux_aarch64.whl</a><br>
 <a href="https://github.com/KumaTea/ext-whl/releases/download/210321/argon2_cffi-20.1.0-cp37-abi3-linux_aarch64.whl">argon2_cffi-20.1.0-cp37-abi3-linux_aarch64.whl</a><br>
 <a href="https://github.com/KumaTea/ext-whl/releases/download/210321/argon2_cffi-20.1.0-cp38-abi3-linux_aarch64.whl">argon2_cffi-20.1.0-cp38-abi3-linux_aarch64.whl</a><br>