diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cb8b350..60f56db 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [windows-latest, macos-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v4
diff --git a/tox.ini b/tox.ini
index 80648f5..8361eab 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,8 @@
 requires =
     tox>=4.2
 env_list =
-    py{312, 311, 310, 39, 38}
+    py{313, 312, 311, 310, 39}
+isolated_build = true
 
 [testenv]
 extras =
@@ -10,4 +11,9 @@ extras =
 pass_env =
     FORCE_COLOR
 commands =
-    {envpython} -m pytest --cov cherry_picker --cov-report html --cov-report term --cov-report xml {posargs}
+    {envpython} -m pytest \
+    --cov cherry_picker \
+    --cov-report html \
+    --cov-report term \
+    --cov-report xml \
+    {posargs}