diff --git a/internal/domains/sensors/repository.go b/internal/domains/sensors/repository.go
index e4274f2..f754818 100644
--- a/internal/domains/sensors/repository.go
+++ b/internal/domains/sensors/repository.go
@@ -6,6 +6,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/jackc/pgx/v5/pgxpool"
 )
 
@@ -42,15 +43,31 @@ func (p *pgxRepo) CreateSensorData(s SensorData) error {
 	return err
 }
 
+const updateSensorQuery = `update sensors set sensor_type = $1, sampling_interval = $2, threshold_above = $3, threshold_below = $4 where sensor_id = $5`
+
 func (p *pgxRepo) UpdateSensor(s Sensor) error {
-	panic("unimplemented")
+	_, err := p.Exec(context.Background(), updateSensorQuery, string(s.SensorType), s.SamplingInterval, s.ThresholdAbove, s.ThresholdBelow, s.SensorID)
+	return err
 }
 
+const readSensorBySensorID = ``
+
 func (p *pgxRepo) ReadSensor(sensorID string) (Sensor, error) {
 	panic("unimplemented")
 }
 
-func (p *pgxRepo) ReadSensorValues(sensorID string, from time.Time, to time.Time) ([]SensorData, error) {
+const readSensorValuesBySensorID = ``
+
+func (p *pgxRepo) ReadSensorValues(sensorID string, from, to time.Time) ([]SensorData, error) {
+	fromPgType := pgtype.Timestamp{
+		Time:  from,
+		Valid: true,
+	}
+	toPgType := pgtype.Timestamp{
+		Time:  to,
+		Valid: true,
+	}
+
 	panic("unimplemented")
 }
 
@@ -139,7 +156,20 @@ func (i *inMemory) CreateSensorData(data SensorData) error {
 }
 
 func (i *inMemory) UpdateSensor(s Sensor) error {
-	panic("unimplemented")
+	i.mu.Lock()
+	defer i.mu.Unlock()
+
+	sensor, exists := i.sensors[s.SensorID]
+	if !exists {
+		return ErrSensorNotFound
+	}
+
+	sensor.SensorType = s.SensorType
+	sensor.SamplingInterval = s.SamplingInterval
+	sensor.ThresholdAbove = s.ThresholdAbove
+	sensor.ThresholdBelow = s.ThresholdBelow
+
+	return nil
 }
 
 func (i *inMemory) ReadSensor(sensorID string) (Sensor, error) {