diff --git a/.forgejo/workflows/ci.yml b/.forgejo/workflows/ci.yml
index 8cf7fed..fe265ea 100644
--- a/.forgejo/workflows/ci.yml
+++ b/.forgejo/workflows/ci.yml
@@ -86,6 +86,9 @@ jobs:
           apt-get install -y -qq python3.12 python3.12-dev python3.12-venv python3-pip git
           python3.12 -m ensurepip --upgrade
 
+      - name: Install setuptools (required by legacy deps)
+        run: python3.12 -m pip install setuptools
+
       - name: Install package with dev deps
         run: python3.12 -m pip install -e ".[dev]"