diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 7d58b383..94cc1a5b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -167,6 +167,8 @@ jobs:
         uses: actions/checkout@v4
       - name: "➕ Setup Python"
         uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
       - name: "➕ Install towncrier"
         run: "pip install 'towncrier'"
       - name: "Generate changelog"
diff --git a/changelogs/internal/newsfragments/1805.clarification b/changelogs/internal/newsfragments/1805.clarification
new file mode 100644
index 00000000..c1b09b62
--- /dev/null
+++ b/changelogs/internal/newsfragments/1805.clarification
@@ -0,0 +1 @@
+Set python version for the Towncrier CI job.