diff --git a/TODO.md b/TODO.md
index eafea965..fee0b1d9 100644
--- a/TODO.md
+++ b/TODO.md
@@ -249,6 +249,7 @@ These are roughly in order of completition
   - but block numbers count is maxed out (10k)
   - and block hashes count is tiny (83)
   - what is going on?
+- [ ] after adding semaphores (or maybe something else), CPU load seems a lot higher. investigate
 
 ## V1
 
diff --git a/migration/src/m20220101_000001_create_table.rs b/migration/src/m20220101_000001_create_table.rs
index 44e48bde..a0e4261a 100644
--- a/migration/src/m20220101_000001_create_table.rs
+++ b/migration/src/m20220101_000001_create_table.rs
@@ -1,4 +1,5 @@
 use sea_orm_migration::prelude::*;
+use sea_orm_migration::sea_query::table::ColumnDef;
 
 #[derive(DeriveMigrationName)]
 pub struct Migration;
diff --git a/migration/src/m20220921_181610_log_reverts.rs b/migration/src/m20220921_181610_log_reverts.rs
index 80944cc9..25e80f8e 100644
--- a/migration/src/m20220921_181610_log_reverts.rs
+++ b/migration/src/m20220921_181610_log_reverts.rs
@@ -1,4 +1,5 @@
 use sea_orm_migration::prelude::*;
+use sea_orm_migration::sea_query::table::ColumnDef;
 
 #[derive(DeriveMigrationName)]
 pub struct Migration;
diff --git a/migration/src/m20220928_015108_concurrency_limits.rs b/migration/src/m20220928_015108_concurrency_limits.rs
index 28394257..76a50a49 100644
--- a/migration/src/m20220928_015108_concurrency_limits.rs
+++ b/migration/src/m20220928_015108_concurrency_limits.rs
@@ -1,4 +1,5 @@
 use sea_orm_migration::prelude::*;
+use sea_orm_migration::sea_query::table::ColumnDef;
 
 #[derive(DeriveMigrationName)]
 pub struct Migration;
diff --git a/migration/src/m20221007_213828_accounting.rs b/migration/src/m20221007_213828_accounting.rs
index f8b44d44..cfb43ffc 100644
--- a/migration/src/m20221007_213828_accounting.rs
+++ b/migration/src/m20221007_213828_accounting.rs
@@ -1,4 +1,5 @@
 use sea_orm_migration::prelude::*;
+use sea_orm_migration::sea_query::table::ColumnDef;
 
 #[derive(DeriveMigrationName)]
 pub struct Migration;