diff --git a/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/down.sql b/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/down.sql
index 61ed3b9b..a205e644 100644
--- a/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/down.sql
+++ b/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/down.sql
@@ -86,5 +86,5 @@ alter table device_profile
   drop column abp_params,
   drop column class_b_params,
   drop column class_c_params,
-  drop column relay_params;
-
+  drop column relay_params,
+  drop column app_layer_params;
diff --git a/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/up.sql b/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/up.sql
index fc637cde..65213704 100644
--- a/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/up.sql
+++ b/chirpstack/migrations_postgres/2025-01-13-152218_refactor_device_profile_fields/up.sql
@@ -2,7 +2,11 @@ alter table device_profile
   add column abp_params jsonb null,
   add column class_b_params jsonb null,
   add column class_c_params jsonb null,
-  add column relay_params jsonb null;
+  add column relay_params jsonb null,
+  add column app_layer_params jsonb not null default '{}';
+
+alter table device_profile
+  alter column app_layer_params drop default;
 
 update device_profile
   set abp_params = json_build_object(
@@ -46,7 +50,7 @@ update device_profile
     'relay_notify_limit_reload_rate', relay_notify_limit_reload_rate,
     'relay_global_uplink_limit_reload_rate', relay_global_uplink_limit_reload_rate,
     'relay_overall_limit_reload_rate', relay_overall_limit_reload_rate,
-    'relay_notify_limit_bucket_size', relay_join_req_limit_bucket_size,
+    'relay_join_req_limit_bucket_size', relay_join_req_limit_bucket_size,
     'relay_notify_limit_bucket_size', relay_notify_limit_bucket_size,
     'relay_global_uplink_limit_bucket_size', relay_global_uplink_limit_bucket_size,
     'relay_overall_limit_bucket_size', relay_overall_limit_bucket_size)
diff --git a/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/down.sql b/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/down.sql
index 3c3f9667..d84eb90e 100644
--- a/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/down.sql
+++ b/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/down.sql
@@ -85,4 +85,5 @@ alter table device_profile drop column abp_params;
 alter table device_profile drop column class_b_params;
 alter table device_profile drop column class_c_params;
 alter table device_profile drop column relay_params;
+alter table device_profile drop column app_layer_params;
 
diff --git a/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/up.sql b/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/up.sql
index c6402c5b..7ca6794f 100644
--- a/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/up.sql
+++ b/chirpstack/migrations_sqlite/2025-01-13-163304_refactor_device_profile_fields/up.sql
@@ -2,6 +2,7 @@ alter table device_profile add column abp_params text null;
 alter table device_profile add column class_b_params text null;
 alter table device_profile add column class_c_params text null;
 alter table device_profile add column relay_params text null;
+alter table device_profile add column app_layer_params text not null default '{}';
 
 update device_profile
   set abp_params = json_object(
@@ -44,7 +45,7 @@ update device_profile
     'relay_notify_limit_reload_rate', relay_notify_limit_reload_rate,
     'relay_global_uplink_limit_reload_rate', relay_global_uplink_limit_reload_rate,
     'relay_overall_limit_reload_rate', relay_overall_limit_reload_rate,
-    'relay_notify_limit_bucket_size', relay_join_req_limit_bucket_size,
+    'relay_join_req_limit_bucket_size', relay_join_req_limit_bucket_size,
     'relay_notify_limit_bucket_size', relay_notify_limit_bucket_size,
     'relay_global_uplink_limit_bucket_size', relay_global_uplink_limit_bucket_size,
     'relay_overall_limit_bucket_size', relay_overall_limit_bucket_size)
diff --git a/chirpstack/src/storage/device_profile.rs b/chirpstack/src/storage/device_profile.rs
index 06dbcb9b..ad4598c6 100644
--- a/chirpstack/src/storage/device_profile.rs
+++ b/chirpstack/src/storage/device_profile.rs
@@ -47,6 +47,7 @@ pub struct DeviceProfile {
     pub class_b_params: Option<fields::ClassBParams>,
     pub class_c_params: Option<fields::ClassCParams>,
     pub relay_params: Option<fields::RelayParams>,
+    pub app_layer_params: fields::AppLayerParams,
 }
 
 impl DeviceProfile {
@@ -96,6 +97,7 @@ impl Default for DeviceProfile {
             class_b_params: None,
             class_c_params: None,
             relay_params: None,
+            app_layer_params: fields::AppLayerParams::default(),
         }
     }
 }
@@ -208,6 +210,7 @@ pub async fn update(dp: DeviceProfile) -> Result<DeviceProfile, Error> {
             device_profile::class_b_params.eq(&dp.class_b_params),
             device_profile::class_c_params.eq(&dp.class_c_params),
             device_profile::relay_params.eq(&dp.relay_params),
+            device_profile::app_layer_params.eq(&dp.app_layer_params),
         ))
         .get_result(&mut get_async_db_conn().await?)
         .await
diff --git a/chirpstack/src/storage/fields/device_profile.rs b/chirpstack/src/storage/fields/device_profile.rs
index b079b114..65dc0ca2 100644
--- a/chirpstack/src/storage/fields/device_profile.rs
+++ b/chirpstack/src/storage/fields/device_profile.rs
@@ -234,3 +234,68 @@ mod ed_activation_mode {
         Ok(v)
     }
 }
+
+#[derive(
+    Default, Debug, Clone, PartialEq, Eq, Deserialize, Serialize, AsExpression, FromSqlRow,
+)]
+#[cfg_attr(feature = "postgres", diesel(sql_type = Jsonb))]
+#[cfg_attr(feature = "sqlite", diesel(sql_type = Text))]
+pub struct AppLayerParams {
+    pub ts003_version: Option<Ts003Version>,
+    pub ts004_version: Option<Ts004Version>,
+    pub ts005_version: Option<Ts005Version>,
+}
+
+#[cfg(feature = "postgres")]
+impl deserialize::FromSql<Jsonb, Pg> for AppLayerParams {
+    fn from_sql(value: <Pg as Backend>::RawValue<'_>) -> deserialize::Result<Self> {
+        let value = <serde_json::Value as deserialize::FromSql<Jsonb, Pg>>::from_sql(value)?;
+        Ok(serde_json::from_value(value)?)
+    }
+}
+
+#[cfg(feature = "postgres")]
+impl serialize::ToSql<Jsonb, Pg> for AppLayerParams {
+    fn to_sql<'b>(&'b self, out: &mut serialize::Output<'b, '_, Pg>) -> serialize::Result {
+        let value = serde_json::to_value(&self)?;
+        <serde_json::Value as serialize::ToSql<Jsonb, Pg>>::to_sql(&value, &mut out.reborrow())
+    }
+}
+
+#[cfg(feature = "sqlite")]
+impl deserialize::FromSql<Text, Sqlite> for AppLayerParams
+where
+    *const str: deserialize::FromSql<Text, Sqlite>,
+{
+    fn from_sql(value: <Sqlite as Backend>::RawValue<'_>) -> deserialize::Result<Self> {
+        let s =
+            <*const str as deserialize::FromSql<diesel::sql_types::Text, Sqlite>>::from_sql(value)?;
+        Ok(serde_json::from_str(unsafe { &*s })?)
+    }
+}
+
+#[cfg(feature = "sqlite")]
+impl serialize::ToSql<Text, Sqlite> for AppLayerParams {
+    fn to_sql<'b>(&'b self, out: &mut serialize::Output<'b, '_, Sqlite>) -> serialize::Result {
+        out.set_value(serde_json::to_string(&self)?);
+        Ok(serialize::IsNull::No)
+    }
+}
+
+#[derive(Default, Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
+pub enum Ts003Version {
+    #[default]
+    V100,
+}
+
+#[derive(Default, Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
+pub enum Ts004Version {
+    #[default]
+    V100,
+}
+
+#[derive(Default, Debug, PartialEq, Eq, Clone, Copy, Serialize, Deserialize)]
+pub enum Ts005Version {
+    #[default]
+    V100,
+}
diff --git a/chirpstack/src/storage/fields/mod.rs b/chirpstack/src/storage/fields/mod.rs
index fe3f8ce9..1db3dc58 100644
--- a/chirpstack/src/storage/fields/mod.rs
+++ b/chirpstack/src/storage/fields/mod.rs
@@ -9,7 +9,7 @@ mod uuid;
 
 pub use big_decimal::BigDecimal;
 pub use dev_nonces::DevNonces;
-pub use device_profile::{AbpParams, ClassBParams, ClassCParams, RelayParams};
+pub use device_profile::{AbpParams, AppLayerParams, ClassBParams, ClassCParams, RelayParams};
 pub use device_session::DeviceSession;
 pub use key_value::KeyValue;
 pub use measurements::*;
diff --git a/chirpstack/src/storage/schema_postgres.rs b/chirpstack/src/storage/schema_postgres.rs
index 3ad43aef..e969fcc2 100644
--- a/chirpstack/src/storage/schema_postgres.rs
+++ b/chirpstack/src/storage/schema_postgres.rs
@@ -117,6 +117,7 @@ diesel::table! {
         class_b_params -> Nullable<Jsonb>,
         class_c_params -> Nullable<Jsonb>,
         relay_params -> Nullable<Jsonb>,
+        app_layer_params -> Jsonb,
     }
 }
 
diff --git a/chirpstack/src/storage/schema_sqlite.rs b/chirpstack/src/storage/schema_sqlite.rs
index e316d0ab..4cd4b876 100644
--- a/chirpstack/src/storage/schema_sqlite.rs
+++ b/chirpstack/src/storage/schema_sqlite.rs
@@ -105,6 +105,7 @@ diesel::table! {
         class_b_params -> Nullable<Text>,
         class_c_params -> Nullable<Text>,
         relay_params -> Nullable<Text>,
+        app_layer_params -> Text,
     }
 }