diff --git a/db/migrate/20230803200825_add_uuid_to_users.rb b/db/migrate/20230803200825_add_uuid_to_users.rb
index f29bd86c..d67f3e9b 100644
--- a/db/migrate/20230803200825_add_uuid_to_users.rb
+++ b/db/migrate/20230803200825_add_uuid_to_users.rb
@@ -6,7 +6,7 @@ class AddUuidToUsers < ActiveRecord::Migration[7.0]
   end
 
   def up
-    add_column :users, :uuid, :text
+    add_column :users, :uuid, :string
     add_index :users, :uuid, unique: true
 
     MigrationUser.all.each do |user|
diff --git a/db/migrate/20230805124454_add_source_to_submissions.rb b/db/migrate/20230805124454_add_source_to_submissions.rb
index eafe68a4..aafa8483 100644
--- a/db/migrate/20230805124454_add_source_to_submissions.rb
+++ b/db/migrate/20230805124454_add_source_to_submissions.rb
@@ -6,7 +6,7 @@ class AddSourceToSubmissions < ActiveRecord::Migration[7.0]
   end
 
   def up
-    add_column :submissions, :source, :text
+    add_column :submissions, :source, :string
 
     MigrationSubmission.where(source: nil).update_all(source: :invite)
 
diff --git a/db/migrate/20230806140534_create_access_tokens.rb b/db/migrate/20230806140534_create_access_tokens.rb
index a36fdda1..6e5c545e 100644
--- a/db/migrate/20230806140534_create_access_tokens.rb
+++ b/db/migrate/20230806140534_create_access_tokens.rb
@@ -5,7 +5,7 @@ class CreateAccessTokens < ActiveRecord::Migration[7.0]
     create_table :access_tokens do |t|
       t.references :user, null: false, foreign_key: true, index: true
       t.text :token, null: false
-      t.text :sha256, null: false, index: { unique: true }
+      t.string :sha256, null: false, index: { unique: true }
 
       t.timestamps
     end