diff --git a/migrations/127_tag_name_unique.rb b/migrations/127_tag_name_unique.rb
new file mode 100644
index 00000000..d31a9566
--- /dev/null
+++ b/migrations/127_tag_name_unique.rb
@@ -0,0 +1,13 @@
+Sequel.migration do
+  up {
+    alter_table(:tags) do
+      add_unique_constraint :name
+    end   
+  }
+  
+  down {
+    alter_table(:tags) do
+      drop_constraint :tags_name_key
+    end   
+  }
+end
\ No newline at end of file