diff --git a/src/activitypub/actors/attachments.rs b/src/activitypub/actors/attachments.rs
index 3f98d12..30987fe 100644
--- a/src/activitypub/actors/attachments.rs
+++ b/src/activitypub/actors/attachments.rs
@@ -158,8 +158,10 @@ pub fn parse_extra_field(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::caip2::ChainId;
-    use crate::utils::id::new_uuid;
+    use crate::utils::{
+        caip2::ChainId,
+        id::generate_ulid,
+    };
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -181,7 +183,7 @@ mod tests {
 
     #[test]
     fn test_payment_option() {
-        let user_id = new_uuid();
+        let user_id = generate_ulid();
         let payment_option =
             PaymentOption::ethereum_subscription(ChainId::ethereum_mainnet());
         let subscription_page_url =
diff --git a/src/activitypub/builders/accept_follow.rs b/src/activitypub/builders/accept_follow.rs
index fff87f0..8651709 100644
--- a/src/activitypub/builders/accept_follow.rs
+++ b/src/activitypub/builders/accept_follow.rs
@@ -10,7 +10,7 @@ use crate::activitypub::{
 use crate::config::Instance;
 use crate::models::profiles::types::DbActorProfile;
 use crate::models::users::types::User;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 
 #[derive(Serialize)]
 struct AcceptFollow {
@@ -34,7 +34,7 @@ fn build_accept_follow(
     follow_activity_id: &str,
 ) -> AcceptFollow {
     // Accept(Follow) is idempotent so its ID can be random
-    let activity_id = local_object_id(instance_url, &new_uuid());
+    let activity_id = local_object_id(instance_url, &generate_ulid());
     let actor_id = local_actor_id(instance_url, &actor_profile.username);
     AcceptFollow {
         context: build_default_context(),
diff --git a/src/activitypub/builders/add_person.rs b/src/activitypub/builders/add_person.rs
index b58e355..1a8a308 100644
--- a/src/activitypub/builders/add_person.rs
+++ b/src/activitypub/builders/add_person.rs
@@ -9,7 +9,7 @@ use crate::activitypub::{
 };
 use crate::config::Instance;
 use crate::models::users::types::User;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 
 #[derive(Serialize)]
 struct AddOrRemovePerson {
@@ -35,7 +35,7 @@ fn build_update_collection(
     remove: bool,
 ) -> AddOrRemovePerson {
     let actor_id = local_actor_id(instance_url, sender_username);
-    let activity_id = local_object_id(instance_url, &new_uuid());
+    let activity_id = local_object_id(instance_url, &generate_ulid());
     let activity_type = if remove { REMOVE } else { ADD };
     let collection_id = collection.of(&actor_id);
     AddOrRemovePerson {
diff --git a/src/activitypub/builders/follow.rs b/src/activitypub/builders/follow.rs
index d7d7a62..b8b123f 100644
--- a/src/activitypub/builders/follow.rs
+++ b/src/activitypub/builders/follow.rs
@@ -68,7 +68,7 @@ pub fn prepare_follow(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -79,7 +79,7 @@ mod tests {
             username: "follower".to_string(),
             ..Default::default()
         };
-        let follow_request_id = new_uuid();
+        let follow_request_id = generate_ulid();
         let target_actor_id = "https://test.remote/actor/test";
         let activity = build_follow(
             INSTANCE_URL,
diff --git a/src/activitypub/builders/like.rs b/src/activitypub/builders/like.rs
index 32bac4a..361dd7c 100644
--- a/src/activitypub/builders/like.rs
+++ b/src/activitypub/builders/like.rs
@@ -110,7 +110,7 @@ pub async fn prepare_like(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -120,7 +120,7 @@ mod tests {
         let author = DbActorProfile::default();
         let post_id = "https://example.com/objects/123";
         let post_author_id = "https://example.com/users/test";
-        let reaction_id = new_uuid();
+        let reaction_id = generate_ulid();
         let activity = build_like(
             INSTANCE_URL,
             &author,
diff --git a/src/activitypub/builders/move_person.rs b/src/activitypub/builders/move_person.rs
index da1589f..62f7f0d 100644
--- a/src/activitypub/builders/move_person.rs
+++ b/src/activitypub/builders/move_person.rs
@@ -10,7 +10,7 @@ use crate::activitypub::{
 };
 use crate::config::Instance;
 use crate::models::users::types::User;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 
 #[derive(Serialize)]
 pub struct MovePerson {
@@ -36,7 +36,7 @@ pub fn build_move_person(
     maybe_internal_activity_id: Option<&Uuid>,
 ) -> MovePerson {
     let internal_activity_id = maybe_internal_activity_id.copied()
-        .unwrap_or(new_uuid());
+        .unwrap_or(generate_ulid());
     let activity_id = local_object_id(instance_url, &internal_activity_id);
     let actor_id = local_actor_id(instance_url, &sender.profile.username);
     MovePerson {
@@ -78,7 +78,7 @@ pub fn prepare_move_person(
 #[cfg(test)]
 mod tests {
     use crate::models::profiles::types::DbActorProfile;
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -97,7 +97,7 @@ mod tests {
             "https://server1.org/users/1".to_string(),
             "https://server2.org/users/2".to_string(),
         ];
-        let internal_activity_id = new_uuid();
+        let internal_activity_id = generate_ulid();
         let activity = build_move_person(
             INSTANCE_URL,
             &sender,
diff --git a/src/activitypub/builders/undo_announce.rs b/src/activitypub/builders/undo_announce.rs
index be60b40..1ed678d 100644
--- a/src/activitypub/builders/undo_announce.rs
+++ b/src/activitypub/builders/undo_announce.rs
@@ -88,7 +88,7 @@ pub async fn prepare_undo_announce(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -97,7 +97,7 @@ mod tests {
     fn test_build_undo_announce() {
         let announcer = DbActorProfile::default();
         let post_author_id = "https://example.com/users/test";
-        let repost_id = new_uuid();
+        let repost_id = generate_ulid();
         let activity = build_undo_announce(
             INSTANCE_URL,
             &announcer,
diff --git a/src/activitypub/builders/undo_follow.rs b/src/activitypub/builders/undo_follow.rs
index d29946a..0706ae7 100644
--- a/src/activitypub/builders/undo_follow.rs
+++ b/src/activitypub/builders/undo_follow.rs
@@ -85,7 +85,7 @@ pub fn prepare_undo_follow(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -97,7 +97,7 @@ mod tests {
             ..Default::default()
         };
         let target_actor_id = "https://test.remote/users/123";
-        let follow_request_id = new_uuid();
+        let follow_request_id = generate_ulid();
         let activity = build_undo_follow(
             INSTANCE_URL,
             &actor_profile,
diff --git a/src/activitypub/builders/undo_like.rs b/src/activitypub/builders/undo_like.rs
index 1898ad0..1181cb8 100644
--- a/src/activitypub/builders/undo_like.rs
+++ b/src/activitypub/builders/undo_like.rs
@@ -87,7 +87,7 @@ pub async fn prepare_undo_like(
 #[cfg(test)]
 mod tests {
     use crate::activitypub::constants::AP_PUBLIC;
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.com";
@@ -96,7 +96,7 @@ mod tests {
     fn test_build_undo_like() {
         let author = DbActorProfile::default();
         let post_author_id = "https://example.com/users/test";
-        let reaction_id = new_uuid();
+        let reaction_id = generate_ulid();
         let activity = build_undo_like(
             INSTANCE_URL,
             &author,
diff --git a/src/activitypub/builders/update_person.rs b/src/activitypub/builders/update_person.rs
index 0658514..88d2657 100644
--- a/src/activitypub/builders/update_person.rs
+++ b/src/activitypub/builders/update_person.rs
@@ -13,7 +13,7 @@ use crate::config::Instance;
 use crate::database::{DatabaseClient, DatabaseError, DatabaseTypeError};
 use crate::models::relationships::queries::get_followers;
 use crate::models::users::types::User;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 
 #[derive(Serialize)]
 pub struct UpdatePerson {
@@ -38,7 +38,7 @@ pub fn build_update_person(
     let actor = get_local_actor(user, instance_url)?;
     // Update(Person) is idempotent so its ID can be random
     let internal_activity_id =
-        maybe_internal_activity_id.unwrap_or(new_uuid());
+        maybe_internal_activity_id.unwrap_or(generate_ulid());
     let activity_id = local_object_id(instance_url, &internal_activity_id);
     let activity = UpdatePerson {
         context: build_default_context(),
@@ -111,7 +111,7 @@ mod tests {
             },
             ..Default::default()
         };
-        let internal_id = new_uuid();
+        let internal_id = generate_ulid();
         let activity = build_update_person(
             INSTANCE_URL,
             &user,
diff --git a/src/activitypub/identifiers.rs b/src/activitypub/identifiers.rs
index ec23667..705dde9 100644
--- a/src/activitypub/identifiers.rs
+++ b/src/activitypub/identifiers.rs
@@ -116,7 +116,7 @@ pub fn parse_local_object_id(
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::id::new_uuid;
+    use crate::utils::id::generate_ulid;
     use super::*;
 
     const INSTANCE_URL: &str = "https://example.org";
@@ -159,7 +159,7 @@ mod tests {
 
     #[test]
     fn test_parse_local_object_id() {
-        let expected_uuid = new_uuid();
+        let expected_uuid = generate_ulid();
         let object_id = format!(
             "https://example.org/objects/{}",
             expected_uuid,
diff --git a/src/mastodon_api/accounts/views.rs b/src/mastodon_api/accounts/views.rs
index 6495e6f..fe52e56 100644
--- a/src/mastodon_api/accounts/views.rs
+++ b/src/mastodon_api/accounts/views.rs
@@ -77,7 +77,7 @@ use crate::utils::{
         serialize_private_key,
     },
     currencies::Currency,
-    id::new_uuid,
+    id::generate_ulid,
     passwords::hash_password,
 };
 use super::helpers::{follow_or_create_request, get_relationship};
@@ -244,7 +244,7 @@ async fn get_unsigned_update(
 ) -> Result<HttpResponse, HttpError> {
     let db_client = &**get_database_client(&db_pool).await?;
     let current_user = get_current_user(db_client, auth.token()).await?;
-    let internal_activity_id = new_uuid();
+    let internal_activity_id = generate_ulid();
     let activity = build_update_person(
         &config.instance_url(),
         &current_user,
diff --git a/src/models/attachments/queries.rs b/src/models/attachments/queries.rs
index 08f7c74..f7e61ce 100644
--- a/src/models/attachments/queries.rs
+++ b/src/models/attachments/queries.rs
@@ -7,7 +7,7 @@ use crate::models::cleanup::{
     find_orphaned_ipfs_objects,
     DeletionQueue,
 };
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 use super::types::DbMediaAttachment;
 
 pub async fn create_attachment(
@@ -17,7 +17,7 @@ pub async fn create_attachment(
     file_size: usize,
     media_type: Option<String>,
 ) -> Result<DbMediaAttachment, DatabaseError> {
-    let attachment_id = new_uuid();
+    let attachment_id = generate_ulid();
     let file_size: i32 = file_size.try_into()
         .expect("value should be within bounds");
     let inserted_row = db_client.query_one(
diff --git a/src/models/emojis/queries.rs b/src/models/emojis/queries.rs
index 4fa89ec..ea32313 100644
--- a/src/models/emojis/queries.rs
+++ b/src/models/emojis/queries.rs
@@ -10,7 +10,7 @@ use crate::models::{
     cleanup::{find_orphaned_files, DeletionQueue},
     instances::queries::create_instance,
 };
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 use super::types::{DbEmoji, EmojiImage};
 
 pub async fn create_emoji(
@@ -21,7 +21,7 @@ pub async fn create_emoji(
     object_id: Option<&str>,
     updated_at: &DateTime<Utc>,
 ) -> Result<DbEmoji, DatabaseError> {
-    let emoji_id = new_uuid();
+    let emoji_id = generate_ulid();
     if let Some(hostname) = hostname {
         create_instance(db_client, hostname).await?;
     };
diff --git a/src/models/invoices/queries.rs b/src/models/invoices/queries.rs
index d0a74c2..2faed27 100644
--- a/src/models/invoices/queries.rs
+++ b/src/models/invoices/queries.rs
@@ -5,8 +5,10 @@ use crate::database::{
     DatabaseClient,
     DatabaseError,
 };
-use crate::utils::caip2::ChainId;
-use crate::utils::id::new_uuid;
+use crate::utils::{
+    caip2::ChainId,
+    id::generate_ulid,
+};
 use super::types::{DbInvoice, InvoiceStatus};
 
 pub async fn create_invoice(
@@ -17,7 +19,7 @@ pub async fn create_invoice(
     payment_address: &str,
     amount: i64,
 ) -> Result<DbInvoice, DatabaseError> {
-    let invoice_id = new_uuid();
+    let invoice_id = generate_ulid();
     let row = db_client.query_one(
         "
         INSERT INTO invoice (
diff --git a/src/models/posts/queries.rs b/src/models/posts/queries.rs
index 6109519..68aa572 100644
--- a/src/models/posts/queries.rs
+++ b/src/models/posts/queries.rs
@@ -23,7 +23,7 @@ use crate::models::notifications::queries::{
 use crate::models::profiles::queries::update_post_count;
 use crate::models::profiles::types::DbActorProfile;
 use crate::models::relationships::types::RelationshipType;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 use super::types::{
     DbPost,
     Post,
@@ -166,7 +166,7 @@ pub async fn create_post(
     post_data: PostCreateData,
 ) -> Result<Post, DatabaseError> {
     let transaction = db_client.transaction().await?;
-    let post_id = new_uuid();
+    let post_id = generate_ulid();
     // Replying to reposts is not allowed
     // Reposting of other reposts or non-public posts is not allowed
     let insert_statement = format!(
diff --git a/src/models/profiles/queries.rs b/src/models/profiles/queries.rs
index 4f5be8c..71835be 100644
--- a/src/models/profiles/queries.rs
+++ b/src/models/profiles/queries.rs
@@ -15,8 +15,10 @@ use crate::models::cleanup::{
 };
 use crate::models::instances::queries::create_instance;
 use crate::models::relationships::types::RelationshipType;
-use crate::utils::currencies::Currency;
-use crate::utils::id::new_uuid;
+use crate::utils::{
+    currencies::Currency,
+    id::generate_ulid,
+};
 use super::types::{
     DbActorProfile,
     ExtraFields,
@@ -31,7 +33,7 @@ pub async fn create_profile(
     db_client: &impl DatabaseClient,
     profile_data: ProfileCreateData,
 ) -> Result<DbActorProfile, DatabaseError> {
-    let profile_id = new_uuid();
+    let profile_id = generate_ulid();
     if let Some(ref hostname) = profile_data.hostname {
         create_instance(db_client, hostname).await?;
     };
diff --git a/src/models/reactions/queries.rs b/src/models/reactions/queries.rs
index 4bac9d9..2c062d7 100644
--- a/src/models/reactions/queries.rs
+++ b/src/models/reactions/queries.rs
@@ -10,7 +10,7 @@ use crate::models::posts::queries::{
     update_reaction_count,
     get_post_author,
 };
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 use super::types::DbReaction;
 
 pub async fn create_reaction(
@@ -20,7 +20,7 @@ pub async fn create_reaction(
     activity_id: Option<&String>,
 ) -> Result<DbReaction, DatabaseError> {
     let transaction = db_client.transaction().await?;
-    let reaction_id = new_uuid();
+    let reaction_id = generate_ulid();
     // Reactions to reposts are not allowed
     let maybe_row = transaction.query_opt(
         "
diff --git a/src/models/relationships/queries.rs b/src/models/relationships/queries.rs
index 70a114b..61fd716 100644
--- a/src/models/relationships/queries.rs
+++ b/src/models/relationships/queries.rs
@@ -12,7 +12,7 @@ use crate::models::profiles::queries::{
     update_subscriber_count,
 };
 use crate::models::profiles::types::DbActorProfile;
-use crate::utils::id::new_uuid;
+use crate::utils::id::generate_ulid;
 use super::types::{
     DbFollowRequest,
     DbRelationship,
@@ -142,7 +142,7 @@ pub async fn create_follow_request(
     source_id: &Uuid,
     target_id: &Uuid,
 ) -> Result<DbFollowRequest, DatabaseError> {
-    let request_id = new_uuid();
+    let request_id = generate_ulid();
     let row = db_client.query_one(
         "
         INSERT INTO follow_request (
@@ -169,7 +169,7 @@ pub async fn create_remote_follow_request_opt(
     target_id: &Uuid,
     activity_id: &str,
 ) -> Result<DbFollowRequest, DatabaseError> {
-    let request_id = new_uuid();
+    let request_id = generate_ulid();
     let row = db_client.query_one(
         "
         INSERT INTO follow_request (
diff --git a/src/utils/id.rs b/src/utils/id.rs
index 1b1fd90..5090c47 100644
--- a/src/utils/id.rs
+++ b/src/utils/id.rs
@@ -2,7 +2,7 @@ use ulid::Ulid;
 use uuid::Uuid;
 
 /// Produces new lexicographically sortable ID
-pub fn new_uuid() -> Uuid {
+pub fn generate_ulid() -> Uuid {
     let ulid = Ulid::new();
     Uuid::from(ulid)
 }