diff --git a/internal/config/config.go b/internal/config/config.go
index 656daa2a..db2ef571 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -12,7 +12,6 @@ type Config struct {
 	HTTP     HTTP      `yaml:"http"`     // http server config
 	Database Database  `yaml:"database"` // database config
 	FCM      FCMConfig `yaml:"fcm"`      // firebase cloud messaging config
-	Tasks    Tasks     `yaml:"tasks"`    // tasks config
 	SSE      SSE       `yaml:"sse"`      // server-sent events config
 	Messages Messages  `yaml:"messages"` // messages config
 	Cache    Cache     `yaml:"cache"`    // cache (memory or redis) config
@@ -60,10 +59,6 @@ type FCMConfig struct {
 	TimeoutSeconds  uint16 `yaml:"timeout_seconds"  envconfig:"FCM__TIMEOUT_SECONDS"`  // push notification send timeout
 }
 
-type Tasks struct {
-	Hashing HashingTask `yaml:"hashing"` // deprecated
-}
-
 type HashingTask struct {
 	IntervalSeconds uint16 `yaml:"interval_seconds" envconfig:"TASKS__HASHING__INTERVAL_SECONDS"` // deprecated
 }
@@ -104,11 +99,6 @@ func Default() Config {
 		FCM: FCMConfig{
 			CredentialsJSON: "",
 		},
-		Tasks: Tasks{
-			Hashing: HashingTask{
-				IntervalSeconds: uint16(15 * 60),
-			},
-		},
 		SSE: SSE{
 			KeepAlivePeriodSeconds: 15,
 		},
diff --git a/internal/config/module.go b/internal/config/module.go
index 4d17c9bb..c8a42757 100644
--- a/internal/config/module.go
+++ b/internal/config/module.go
@@ -109,16 +109,12 @@ func Module() fx.Option {
 		}),
 		fx.Provide(func(cfg Config) messages.Config {
 			return messages.Config{
-				CacheTTL: time.Duration(cfg.Messages.CacheTTLSeconds) * time.Second,
-				HashingInterval: time.Duration(
-					max(cfg.Tasks.Hashing.IntervalSeconds, cfg.Messages.HashingIntervalSeconds),
-				) * time.Second,
+				CacheTTL:        time.Duration(cfg.Messages.CacheTTLSeconds) * time.Second,
+				HashingInterval: time.Duration(cfg.Messages.HashingIntervalSeconds) * time.Second,
 			}
 		}),
 		fx.Provide(func(_ Config) devices.Config {
-			return devices.Config{
-				UnusedLifetime: 365 * 24 * time.Hour, //TODO: make it configurable
-			}
+			return devices.Config{}
 		}),
 		fx.Provide(func(cfg Config) sse.Config {
 			return sse.NewConfig(
diff --git a/internal/sms-gateway/modules/devices/config.go b/internal/sms-gateway/modules/devices/config.go
index 7495b3ea..2c61a0c6 100644
--- a/internal/sms-gateway/modules/devices/config.go
+++ b/internal/sms-gateway/modules/devices/config.go
@@ -1,7 +1,4 @@
 package devices
 
-import "time"
-
 type Config struct {
-	UnusedLifetime time.Duration
 }