diff --git a/README.md b/README.md
index 6eb34df..3a1e254 100644
--- a/README.md
+++ b/README.md
@@ -570,7 +570,7 @@ extract_archive(large_archive, "restore/", streaming=True)
 ## Requirements
 
 - Python 3.12 or higher (including Python 3.14 pre-release)
-- zstandard >= 0.23.0
+- zstandard >= 0.23.1
 
 ## Development
 
diff --git a/pyproject.toml b/pyproject.toml
index a2825be..688233f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ classifiers = [
     "Topic :: System :: Archiving :: Compression",
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
-dependencies = ["zstandard>=0.23.0,<1.0.0"]
+dependencies = ["zstandard>=0.23.1,<1.0.0"]
 
 [project.optional-dependencies]
 dev = ["pytest>=7.0.0", "pytest-cov>=4.0.0", "ruff>=0.1.0", "black>=23.0.0"]
diff --git a/src/tzst/core.py b/src/tzst/core.py
index 524ced6..c31e2c4 100644
--- a/src/tzst/core.py
+++ b/src/tzst/core.py
@@ -1,5 +1,16 @@
 """Core functionality for tzst archives."""
 
+# Compatibility fix for Python 3.14 - ByteString was removed from typing
+# This must be applied before importing zstandard
+import typing
+
+try:
+    from collections.abc import ByteString
+
+    typing.ByteString = ByteString
+except ImportError:
+    pass
+
 import io
 import os
 import tarfile