diff --git a/app/models.py b/app/models.py
index 81767406a1..215ad47372 100644
--- a/app/models.py
+++ b/app/models.py
@@ -280,6 +280,8 @@ class EmailBranding(BaseModel):
         UUID(as_uuid=True), db.ForeignKey("organisation.id", ondelete="SET NULL"), index=True, nullable=True
     )
     organisation = db.relationship("Organisation", back_populates="email_branding", foreign_keys=[organisation_id])
+    alt_text_en = db.Column(db.String(), nullable=True)
+    alt_text_fr = db.Column(db.String(), nullable=True)
 
     def serialize(self) -> dict:
         serialized = {
@@ -290,6 +292,8 @@ def serialize(self) -> dict:
             "text": self.text,
             "brand_type": self.brand_type,
             "organisation_id": str(self.organisation_id) if self.organisation_id else "",
+            "alt_text_en": self.alt_text_en,
+            "alt_text_fr": self.alt_text_fr,
         }
 
         return serialized
diff --git a/migrations/versions/0446_add_alt_text.py b/migrations/versions/0446_add_alt_text.py
new file mode 100644
index 0000000000..89e1b1268c
--- /dev/null
+++ b/migrations/versions/0446_add_alt_text.py
@@ -0,0 +1,35 @@
+"""
+Revision ID: 0446_add_alt_text.py
+Revises: 0445_add_org_id_branding.py
+Create Date: 2024-04-23
+"""
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy import text
+from sqlalchemy.dialects import postgresql
+
+revision = "0446_add_alt_text"
+down_revision = "0445_add_org_id_branding"
+
+
+def upgrade():
+    table_description = op.get_bind().execute(
+        text("SELECT * FROM information_schema.columns WHERE table_name = 'email_branding'")
+    )
+
+    # Check if the column exists
+    if "alt_text_en" not in [column["column_name"] for column in table_description]:
+        op.add_column(
+            "email_branding",
+            sa.Column("alt_text_en", sa.String(), nullable=True),
+        )
+    if "alt_text_fr" not in [column["column_name"] for column in table_description]:
+        op.add_column(
+            "email_branding",
+            sa.Column("alt_text_fr", sa.String(), nullable=True),
+        )
+
+
+def downgrade():
+    op.drop_column("email_branding", "alt_text_fr")
+    op.drop_column("email_branding", "alt_text_en")