diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fede2c7..1c7bf76 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ['3.11', '3.10', '3.9']
+        python-version: ['3.13', '3.12', '3.11', '3.10', '3.9']
     env:
       OS: ${{ matrix.os }}
     steps:
diff --git a/requirements_test.txt b/requirements_test.txt
index 8f3273c..b96ac13 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,3 +1,4 @@
+setuptools
 pytest
 pytest-cov
 pytest-mock