diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 3f26c797fc..d0d8db72c2 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -26,6 +26,9 @@ jobs:
   pytest-coverage: # from pytest_coverage.yml
     needs: lint
     runs-on: ubuntu-latest
+    env:
+      # A workaround for long FQDN names provided by GitHub actions.
+      FQDN: "localhost"
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python 3.8
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index f7d9ca30b9..d15cc60dba 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -10,6 +10,9 @@ permissions:
 jobs:
   pytest-coverage: # from pytest_coverage.yml
     runs-on: windows-latest
+    env:
+      # A workaround for long FQDN names provided by GitHub actions.
+      FQDN: "localhost"
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python 3.8