diff --git a/docs/services/heap.rst b/docs/services/heap.rst
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--- a/docs/services/heap.rst
+++ b/docs/services/heap.rst
@@ -1,6 +1,6 @@
-==================================
+=====================================
 Heap -- analytics and events tracking
-==================================
+=====================================
 
 `Heap`_ automatically captures all user interactions on your site, from the moment of installation forward.