diff --git a/unix_time_conversion.install b/unix_time_conversion.install
new file mode 100644
index 0000000..c4d2290
--- /dev/null
+++ b/unix_time_conversion.install
@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Defines the variables used for unix time conversion settings.
+ */
+
+/**
+ * Implements hook_uninstall().
+ */
+function unix_time_conversion_uninstall() {
+  // Deleting variables on module uninstall.
+  \Drupal::state()->delete('unix_time_conversion.settings');
+}