diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7f469546b..5e784fd8d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -93,8 +93,12 @@ jobs:
       uses: ./.github/workflows/build
       with:
         images: api dbapi nslord nsmaster dblord dbmaster
+    - name: Pin Python version
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.11.8'
     - name: Run API Tests
-      run: docker-compose -f docker-compose.yml -f docker-compose.test-api.yml run -T api bash -c "./entrypoint-tests.sh"
+      run: docker-compose -f docker-compose.yml -f docker-compose.test-api.yml run -T api bash -c "python --version && python3 --version && ./entrypoint-tests.sh"
     - name: API Tests Logs and Cleanup
       if: always()
       run: |
diff --git a/api/desecapi/templates/emails/donation/desec-content.txt b/api/desecapi/templates/emails/donation/desec-content.txt
index b754ad7e3..479e13887 100644
--- a/api/desecapi/templates/emails/donation/desec-content.txt
+++ b/api/desecapi/templates/emails/donation/desec-content.txt
@@ -1,6 +1,6 @@
 Woha,
 
-{{ donation.name }} <{{ donation.email }}> hat {{ donation.amount }}€ gespendet.
+{{ donation.name }} <{{ donation.email }}> hat {{ donation.amount }}EUR gespendet.
 
 Häufigkeit: alle {{ donation.interval }} Monate
 
diff --git a/api/desecapi/tests/test_donations.py b/api/desecapi/tests/test_donations.py
index 3ce6585fd..ea4c40a67 100644
--- a/api/desecapi/tests/test_donations.py
+++ b/api/desecapi/tests/test_donations.py
@@ -20,7 +20,39 @@ def test_create_donation_minimal(self):
         }
         response = self.client.post(url, data)
         self.assertTrue(mail.outbox)
-        email_internal = str(mail.outbox[0].message())
+
+        import copy
+        from base64 import b64encode
+        from django.core.mail.message import SafeMIMEText
+
+        class Mock(SafeMIMEText):
+            def __new__(cls, *args, **kwargs):
+                if args and isinstance(args[0], SafeMIMEText):
+                    other = copy.copy(args[0])
+                    other.__class__ = Mock
+                    return other
+                return object.__new__(cls)
+
+            def __init__(self, other):
+                pass
+
+            def set_payload(self, payload, *args, **kwargs):
+                print(
+                    "set_payload",
+                    type(payload),
+                    payload.encode(errors="backslashreplace"),
+                )
+                return super().set_payload(payload, *args, **kwargs)
+
+        msg = mail.outbox[0].message()
+        msg._payload = [Mock(o) for o in msg._payload]
+        # print(msg._payload)
+        # print(
+        #    "DEBUG1",
+        #    [b64encode(o.as_bytes()) for o in msg._payload],
+        # )
+        # print("DEBUG2", b64encode(msg.as_bytes()))
+        email_internal = str(msg)
         direct_debit = str(mail.outbox[0].attachments[0][1])
         reply_to = mail.outbox[0].reply_to
         self.assertStatus(response, status.HTTP_201_CREATED)