diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index df0ff75..9aacf94 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - uses: actions/checkout@v2.5.0
diff --git a/pyproject.toml b/pyproject.toml
index 22aa245..500d65e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,10 +17,11 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
-    "Programming Language :: Python :: 3.12"
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13"
 ]
 dependencies = [
-    "lxml ~= 4.9.2"
+    "lxml ~= 5.3.0"
 ]
 keywords = [
     'waveform',