diff --git a/alembic/versions/20240617_1359_5f5835d81917_add_proof_date_field.py b/alembic/versions/20240617_1359_5f5835d81917_add_proof_date_field.py
new file mode 100644
index 00000000..3fe7a0bb
--- /dev/null
+++ b/alembic/versions/20240617_1359_5f5835d81917_add_proof_date_field.py
@@ -0,0 +1,43 @@
+"""Add Proof date field
+
+Revision ID: 5f5835d81917
+Revises: 818f9ced20cd
+Create Date: 2024-06-17 13:59:42.294690
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "5f5835d81917"
+down_revision: Union[str, None] = "818f9ced20cd"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("proofs", sa.Column("date", sa.Date(), nullable=True))
+    # Set the date to the date of the first price for each proof
+    op.execute(
+        """
+        UPDATE proofs
+        SET date = (
+            SELECT date
+            FROM prices
+            WHERE prices.proof_id = proofs.id
+            LIMIT 1
+        )
+        WHERE type IN ('PRICE_TAG', 'RECEIPT')
+        """
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column("proofs", "date")
+    # ### end Alembic commands ###
diff --git a/app/crud.py b/app/crud.py
index 9a29bf3a..afadb490 100644
--- a/app/crud.py
+++ b/app/crud.py
@@ -383,6 +383,7 @@ def create_proof(
     mimetype: str,
     type: ProofTypeEnum,
     user: UserCreate,
+    date: str = None,
     source: str = None,
 ) -> Proof:
     """Create a proof in the database.
@@ -397,6 +398,7 @@ def create_proof(
         file_path=file_path,
         mimetype=mimetype,
         type=type,
+        date=date,
         owner=user.user_id,
         source=source,
     )
diff --git a/app/models.py b/app/models.py
index 3c549514..a3919724 100644
--- a/app/models.py
+++ b/app/models.py
@@ -124,6 +124,8 @@ class Proof(Base):
         Integer, nullable=False, server_default="0", index=True
     )
 
+    date = mapped_column(Date)
+
     owner = mapped_column(String, index=True)
 
     source = mapped_column(String, nullable=True)
diff --git a/app/routers/proofs.py b/app/routers/proofs.py
index 0f0fc42a..32cb3831 100644
--- a/app/routers/proofs.py
+++ b/app/routers/proofs.py
@@ -40,6 +40,7 @@ def upload_proof(
     file: UploadFile,
     type: Annotated[ProofTypeEnum, Form(description="The type of the proof")],
     current_user: schemas.UserCreate = Depends(get_current_user),
+    date: str | None = None,
     app_name: str | None = None,
     db: Session = Depends(get_db),
 ) -> Proof:
@@ -53,7 +54,13 @@ def upload_proof(
     """
     file_path, mimetype = crud.create_proof_file(file)
     db_proof = crud.create_proof(
-        db, file_path, mimetype, type=type, user=current_user, source=app_name
+        db,
+        file_path,
+        mimetype,
+        type=type,
+        user=current_user,
+        date=date,
+        source=app_name,
     )
     return db_proof
 
diff --git a/app/schemas.py b/app/schemas.py
index 24fed623..d029b354 100644
--- a/app/schemas.py
+++ b/app/schemas.py
@@ -185,6 +185,9 @@ class ProofFull(BaseModel):
     price_count: int = Field(
         description="number of prices for this proof.", examples=[15], default=0
     )
+    date: datetime.date | None = Field(
+        description="date of the proof.", examples=["2024-01-01"]
+    )
     owner: str
     # source: str | None = Field(
     #     description="Source (App name)",
@@ -199,6 +202,7 @@ class ProofFull(BaseModel):
 
 class ProofBasicUpdatableFields(BaseModel):
     type: ProofTypeEnum | None = None
+    date: datetime.date | None = None
 
     class Config:
         extra = "forbid"
diff --git a/tests/integration/test_api.py b/tests/integration/test_api.py
index 499dc4b7..a99bcf10 100644
--- a/tests/integration/test_api.py
+++ b/tests/integration/test_api.py
@@ -845,6 +845,13 @@ def test_create_proof(db_session, user_session: SessionModel, clean_proofs):
         headers={"Authorization": f"Bearer {user_session.token}"},
     )
     assert response.status_code == 422
+    # with authentication but validation error (date format)
+    response = client.post(
+        "/api/v1/proofs/upload",
+        data={"type": "PRICE_TAG", "date": "test"},
+        headers={"Authorization": f"Bearer {user_session.token}"},
+    )
+    assert response.status_code == 422
 
     # with authentication and no validation error
     response = client.post(
@@ -859,7 +866,7 @@ def test_create_proof(db_session, user_session: SessionModel, clean_proofs):
     response = client.post(
         "/api/v1/proofs/upload",
         files={"file": ("filename", (io.BytesIO(b"test")), "image/webp")},
-        data={"type": "RECEIPT"},
+        data={"type": "RECEIPT", "date": "2024-01-01"},
         headers={"Authorization": f"Bearer {user_session.token}"},
     )
     assert response.status_code == 201
@@ -905,6 +912,7 @@ def test_get_proofs(db_session, user_session: SessionModel, clean_proofs):
             "mimetype",
             "type",
             "price_count",
+            "date",
             "owner",
             "created",
             "updated",
@@ -1034,6 +1042,16 @@ def test_update_proof(
     )
     assert response.status_code == 200
     assert response.json()["type"] == "RECEIPT"
+    assert response.json()["date"] is None
+    PROOF_UPDATE_PARTIAL = {"date": "2024-01-01"}
+    response = client.patch(
+        f"/api/v1/proofs/{proof.id}",
+        headers={"Authorization": f"Bearer {user_session.token}"},
+        json=jsonable_encoder(PROOF_UPDATE_PARTIAL),
+    )
+    assert response.status_code == 200
+    assert response.json()["type"] == "RECEIPT"
+    assert response.json()["date"] == "2024-01-01"
 
     # with authentication and proof owner but extra fields
     PROOF_UPDATE_PARTIAL_WRONG = {**PROOF_UPDATE_PARTIAL, "owner": 1}