diff --git a/docs/_static/exercise.png b/docs/_static/exercise.png
new file mode 100644
index 0000000..0ab73ad
Binary files /dev/null and b/docs/_static/exercise.png differ
diff --git a/docs/exercise.rst b/docs/exercise.rst
index 505bde7..e8f9121 100644
--- a/docs/exercise.rst
+++ b/docs/exercise.rst
@@ -36,7 +36,7 @@ role of cybersecurity experts for an organization with a technical environment s
 to the hacked power plant infrastructure. Red boxes are used to indicate assets impacted
 during the campaign.
 
-.. figure:: ./_static/ref_arch.png
+.. figure:: ./_static/exercise.png
   :align: center
   :scale: 25%