diff --git a/app/models/submitter.rb b/app/models/submitter.rb
index cedca938..11950566 100644
--- a/app/models/submitter.rb
+++ b/app/models/submitter.rb
@@ -32,7 +32,7 @@ class Submitter < ApplicationRecord
   belongs_to :submission
 
   attribute :values, :string, default: -> { {} }
-  attribute :slug, :string, default: -> { SecureRandom.base58(8) }
+  attribute :slug, :string, default: -> { SecureRandom.base58(10) }
 
   serialize :values, JSON
 
diff --git a/app/models/template.rb b/app/models/template.rb
index e6ec4f2d..bf97187e 100644
--- a/app/models/template.rb
+++ b/app/models/template.rb
@@ -36,7 +36,7 @@ class Template < ApplicationRecord
   attribute :fields, :string, default: -> { [] }
   attribute :schema, :string, default: -> { [] }
   attribute :submitters, :string, default: -> { [{ name: DEFAULT_SUBMITTER_NAME, uuid: SecureRandom.uuid }] }
-  attribute :slug, :string, default: -> { SecureRandom.base58(8) }
+  attribute :slug, :string, default: -> { SecureRandom.base58(10) }
 
   serialize :fields, JSON
   serialize :schema, JSON