diff --git a/src/ects.py b/src/ects.py
index c9fe99a..e1a0c92 100644
--- a/src/ects.py
+++ b/src/ects.py
@@ -19,4 +19,8 @@ class ECTS:
         if is_at_desk and ((current_time - self.last_update_time) >= ECTS_UPDATE_INTERVAL):
             self.ects_balance += self.ects_per_second
             # reset timer
-            self.last_update_time = current_time
\ No newline at end of file
+            self.last_update_time = current_time
+
+    # beer increases amount of how much ects are earned per second
+    def upgrade_rate(self, extra_ects):
+        self.ects_per_second += extra_ects
\ No newline at end of file