diff --git a/docker-compose.yml b/docker-compose.yml
index b9e4c33..d65381e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   meldingen-core:
     image: amsterdam/meldingen-core
diff --git a/meldingen_core/actions/melding.py b/meldingen_core/actions/melding.py
index 0646487..d0dccd3 100644
--- a/meldingen_core/actions/melding.py
+++ b/meldingen_core/actions/melding.py
@@ -66,6 +66,8 @@ class MeldingRetrieveAction(BaseRetrieveAction[T, T_co]):
 
 
 class MeldingUpdateAction(BaseCRUDAction[T, T_co]):
+    """Action that updates the melding and reclassifies it"""
+
     _verify_token: TokenVerifier[T, T_co]
     _classify: Classifier
     _state_machine: BaseMeldingStateMachine[T]
@@ -97,6 +99,30 @@ async def __call__(self, pk: int, values: dict[str, Any], token: str) -> T:
         return melding
 
 
+class MeldingAddContactAction(BaseCRUDAction[T, T_co]):
+    """Action that adds contact information to a melding."""
+
+    _verify_token: TokenVerifier[T, T_co]
+
+    def __init__(
+        self,
+        repository: BaseMeldingRepository[T, T_co],
+        token_verifier: TokenVerifier[T, T_co],
+    ) -> None:
+        super().__init__(repository)
+        self._verify_token = token_verifier
+
+    async def __call__(self, pk: int, phone: str | None, email: str | None, token: str) -> T:
+        melding = await self._verify_token(pk, token)
+
+        melding.phone = phone
+        melding.email = email
+
+        await self._repository.save(melding)
+
+        return melding
+
+
 class BaseStateTransitionAction(Generic[T, T_co], metaclass=ABCMeta):
     """
     This action covers transitions that do not require the melding's token to be verified.
diff --git a/meldingen_core/models.py b/meldingen_core/models.py
index 677a5cc..8613ce6 100644
--- a/meldingen_core/models.py
+++ b/meldingen_core/models.py
@@ -15,9 +15,11 @@ class Melding:
 
     text: str
     classification: Classification | None = None
+    attachments: list["Attachment"] = field(default_factory=list)
     token: str | None = None
     token_expires: datetime | None = None
-    attachments: list["Attachment"] = field(default_factory=list)
+    email: str | None = None
+    phone: str | None = None
 
 
 @dataclass
diff --git a/tests/test_actions/test_melding_actions.py b/tests/test_actions/test_melding_actions.py
index 6e166a1..f008d37 100644
--- a/tests/test_actions/test_melding_actions.py
+++ b/tests/test_actions/test_melding_actions.py
@@ -6,6 +6,7 @@
 
 from meldingen_core.actions.melding import (
     MeldingAddAttachmentsAction,
+    MeldingAddContactAction,
     MeldingAnswerQuestionsAction,
     MeldingCompleteAction,
     MeldingCreateAction,
@@ -90,6 +91,35 @@ async def test_melding_update_action() -> None:
     assert melding.classification == classification
 
 
+@pytest.mark.anyio
+async def test_melding_add_contact_action() -> None:
+    token = "123456"
+    repository = Mock(BaseMeldingRepository)
+    repository.retrieve.return_value = Melding("text", token=token, token_expires=datetime.now() + timedelta(days=1))
+    token_verifier = AsyncMock(TokenVerifier)
+
+    action: MeldingAddContactAction[Melding, Melding] = MeldingAddContactAction(repository, token_verifier)
+
+    phone = "1234567"
+    email = "user@test.com"
+    melding = await action(123, phone, email, token)
+
+    assert melding.phone == phone
+    assert melding.email == email
+
+
+@pytest.mark.anyio
+async def test_melding_add_contact_action_not_found() -> None:
+    repository = Mock(BaseMeldingRepository)
+    repository.retrieve.return_value = None
+    token_verifier: TokenVerifier[Melding, Melding] = TokenVerifier(repository)
+
+    action: MeldingAddContactAction[Melding, Melding] = MeldingAddContactAction(repository, token_verifier)
+
+    with pytest.raises(NotFoundException):
+        await action(123, "1234567", "user@test.com", "token")
+
+
 @pytest.mark.anyio
 async def test_melding_answer_questions_action() -> None:
     state_machine = Mock(BaseMeldingStateMachine)