diff --git a/.gitea/workflows/on_pull_request.yaml b/.gitea/workflows/on_pull_request.yaml
index 7e6a8765..f15f573c 100644
--- a/.gitea/workflows/on_pull_request.yaml
+++ b/.gitea/workflows/on_pull_request.yaml
@@ -15,6 +15,8 @@ jobs:
       - uses: actions/setup-python@v4
         with:
           python-version: 3.11.0
+          env:
+            AGENT_TOOLSDIRECTORY: /opt/hostedtoolache
           # NB: there's no cache: pip here since we're not installing anything
           #     from the requirements.txt file(s) in the repository; it's faster
           #     not to have GHA download an (at the time of writing) 4 GB cache
diff --git a/.gitea/workflows/run_tests.yaml b/.gitea/workflows/run_tests.yaml
index c45a5085..50acda5a 100644
--- a/.gitea/workflows/run_tests.yaml
+++ b/.gitea/workflows/run_tests.yaml
@@ -20,6 +20,8 @@ jobs:
         with:
           python-version: "3.10.6"
           cache: pip
+          env:
+            AGENT_TOOLSDIRECTORY: /opt/hostedtoolache
           cache-dependency-path: |
             **/requirements*txt
             launch.py