diff --git a/backends/rapidpro/backend.go b/backends/rapidpro/backend.go
index 67e39d3ea..078e87d4a 100644
--- a/backends/rapidpro/backend.go
+++ b/backends/rapidpro/backend.go
@@ -517,7 +517,7 @@ func (b *backend) OnSendComplete(ctx context.Context, msg courier.MsgOut, status
 	wasSuccess := status.Status() == courier.MsgStatusWired || status.Status() == courier.MsgStatusSent || status.Status() == courier.MsgStatusDelivered || status.Status() == courier.MsgStatusRead
 	if wasSuccess && dbMsg.Session_ != nil && dbMsg.Session_.Timeout > 0 {
 		if err := b.insertTimeoutFire(ctx, dbMsg); err != nil {
-			slog.Error("unable to update session timeout", "error", err, "session_id", dbMsg.SessionID_)
+			slog.Error("unable to update session timeout", "error", err, "session_uuid", dbMsg.Session_.UUID)
 		}
 	}
 
diff --git a/backends/rapidpro/backend_test.go b/backends/rapidpro/backend_test.go
index e087544dd..53d9c487b 100644
--- a/backends/rapidpro/backend_test.go
+++ b/backends/rapidpro/backend_test.go
@@ -1369,16 +1369,14 @@ func (ts *BackendTestSuite) TestSessionTimeout() {
 	err := ts.b.insertTimeoutFire(ctx, msg)
 	ts.NoError(err)
 
-	assertdb.Query(ts.T(), ts.b.db, `SELECT org_id, contact_id, fire_type, scope, session_uuid::text, sprint_uuid::text, extra->>'session_id' AS session_id, extra->>'session_modified_on' AS session_modified_on FROM contacts_contactfire`).
+	assertdb.Query(ts.T(), ts.b.db, `SELECT org_id, contact_id, fire_type, scope, session_uuid::text, sprint_uuid::text FROM contacts_contactfire`).
 		Columns(map[string]any{
-			"org_id":              int64(1),
-			"contact_id":          int64(100),
-			"fire_type":           "T",
-			"scope":               "",
-			"session_uuid":        "79c1dbc6-4200-4333-b17a-1f996273a4cb",
-			"sprint_uuid":         "0897c392-8b08-43c4-b9d9-e75d332a2c58",
-			"session_id":          "12345",
-			"session_modified_on": "2025-01-28T20:43:34.157379218Z",
+			"org_id":       int64(1),
+			"contact_id":   int64(100),
+			"fire_type":    "T",
+			"scope":        "",
+			"session_uuid": "79c1dbc6-4200-4333-b17a-1f996273a4cb",
+			"sprint_uuid":  "0897c392-8b08-43c4-b9d9-e75d332a2c58",
 		})
 
 	// if there's a conflict (e.g. in this case trying to add same timeout again), it should be ignored
diff --git a/backends/rapidpro/msg.go b/backends/rapidpro/msg.go
index faab37861..f1ca29b2f 100644
--- a/backends/rapidpro/msg.go
+++ b/backends/rapidpro/msg.go
@@ -92,10 +92,6 @@ type Msg struct {
 	channel        *Channel
 	workerToken    queue.WorkerToken
 	alreadyWritten bool
-
-	// deprecated
-	SessionID_         SessionID  `json:"session_id"`
-	SessionModifiedOn_ *time.Time `json:"session_modified_on"`
 }
 
 // newMsg creates a new DBMsg object with the passed in parameters
diff --git a/backends/rapidpro/timeouts.go b/backends/rapidpro/timeouts.go
index ce4ef428d..34ee220be 100644
--- a/backends/rapidpro/timeouts.go
+++ b/backends/rapidpro/timeouts.go
@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/nyaruka/gocommon/dates"
-	"github.com/nyaruka/gocommon/jsonx"
 )
 
 // SessionID is our type for RapidPro session ids
@@ -14,17 +13,16 @@ type SessionID int64
 
 const sqlInsertTimeoutFire = `
 INSERT INTO contacts_contactfire(org_id, contact_id, fire_type, scope, fire_on, session_uuid, sprint_uuid, extra)
-                          VALUES($1, $2, 'T', '', $3, $4, $5, $6)
+                          VALUES($1, $2, 'T', '', $3, $4, $5, '{}')
 ON CONFLICT DO NOTHING`
 
 // insertTimeoutFire inserts a timeout fire for the session associated with the given msg
 func (b *backend) insertTimeoutFire(ctx context.Context, m *Msg) error {
-	extra := map[string]any{"session_id": m.SessionID_, "session_modified_on": m.SessionModifiedOn_}
 	timeoutOn := dates.Now().Add(time.Duration(m.Session_.Timeout) * time.Second)
 
-	_, err := b.db.ExecContext(ctx, sqlInsertTimeoutFire, m.OrgID_, m.ContactID_, timeoutOn, m.Session_.UUID, m.Session_.SprintUUID, jsonx.MustMarshal(extra))
+	_, err := b.db.ExecContext(ctx, sqlInsertTimeoutFire, m.OrgID_, m.ContactID_, timeoutOn, m.Session_.UUID, m.Session_.SprintUUID)
 	if err != nil {
-		return fmt.Errorf("error inserting session timeout contact fire for session #%d: %w", m.SessionID_, err)
+		return fmt.Errorf("error inserting session timeout contact fire for session %s: %w", m.Session_.UUID, err)
 	}
 	return nil
 }