diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 0f7513f..2440634 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -32,6 +32,7 @@ jobs:
         python-version: [pp310, cp37, cp38, cp39, cp310, cp311, cp312]
         exclude:
           # pp310, cp37, cp38 on musllinux is not support
+          # cp39, cp310 on musllinux_aarch64, wheel building may hangup, ignore it
           - buildplat: [ubuntu-22.04, musllinux_x86_64]
             python-version: cp37
           - buildplat: [ubuntu-22.04, musllinux_x86_64]
@@ -42,6 +43,10 @@ jobs:
             python-version: cp37
           - buildplat: [ubuntu-22.04, musllinux_aarch64]
             python-version: cp38
+          - buildplat: [ubuntu-22.04, musllinux_aarch64]
+            python-version: cp39
+          - buildplat: [ubuntu-22.04, musllinux_aarch64]
+            python-version: cp310
           - buildplat: [ubuntu-22.04, musllinux_aarch64]
             python-version: pp310
 
diff --git a/README.md b/README.md
index 3bf8322..73d2382 100644
--- a/README.md
+++ b/README.md
@@ -70,11 +70,25 @@ for v in vcf('11:435345-556565'):
 Installation
 ============
 
-## pip (assuming you have htslib < 1.10 installed)
+## pip with bundled htslib
 ```
 pip install cyvcf2
 ```
 
+## pip with system htslib
+
+Assuming you have already built and installed htslib version 1.12 or higher.
+```
+CYVCF2_HTSLIB_MODE=EXTERNAL pip install --no-binary cyvcf2 cyvcf2
+```
+
+## windows (experimental, only test on MSYS2)
+
+Assuming you have already built and installed htslib.
+```
+SETUPTOOLS_USE_DISTUTILS=stdlib pip install cyvcf2
+```
+
 ## github (building htslib and cyvcf2 from source)
 
 ```