diff --git a/db/migrate/20220608141004_change_value_to_decimal.rb b/db/migrate/20220608141004_change_value_to_decimal.rb
new file mode 100644
index 0000000..2a5024e
--- /dev/null
+++ b/db/migrate/20220608141004_change_value_to_decimal.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class ChangeValueToDecimal < ActiveRecord::Migration[6.1]
+  def up
+    change_column :sensors, :value, :decimal, precision: 10
+  end
+
+  def down
+    change_column :sensors, :value, :integer
+  end
+end