diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index feaf6f4..5c9eca5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,7 +29,7 @@ jobs:
         uses: pypa/cibuildwheel@v2.18.1
         env:
           # Skip older python's to prevent things like: https://github.com/pypa/cibuildwheel/issues/1828
-          CIBW_SKIP: cp36-* cp37-* cp38-*
+          CIBW_SKIP: cp36-* cp37-* cp38-* pp38-*
 
           # Specify native archs ('auto') and additional architectures using emulation
           CIBW_ARCHS_LINUX: auto aarch64
diff --git a/pyproject.toml b/pyproject.toml
index 2bd85d1..4537022 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ authors = [
     { name = "EarthScope Data Services", email = "software@earthscope.org" },
 ]
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 keywords = ["seismology", "miniseed", "mseed", "data", "waveform", "seismic"]
 license = { text = "Apache-2.0" }
 classifiers = [
diff --git a/src/mseedlib/msrecord.py b/src/mseedlib/msrecord.py
index ba44ecb..5b93dac 100644
--- a/src/mseedlib/msrecord.py
+++ b/src/mseedlib/msrecord.py
@@ -7,7 +7,7 @@
 
 
 class MS3Record(ct.Structure):
-    """A miniSEED record base class based on libmseed's MS3Record structure"""
+    """A miniSEED record base class mirroring libmseed's MS3Record structure"""
     _fields_ = [('_record',        ct.POINTER(ct.c_char)),  # Raw miniSEED record, if available
                 ('_reclen',        ct.c_int32),   # Length of miniSEED record in bytes
                 ('_swapflag',      ct.c_uint8),   # Byte swap indicator (bitmask)