diff --git a/part13-interrupts/README.md b/part13-interrupts/README.md
index 67074ec..d3133c1 100644
--- a/part13-interrupts/README.md
+++ b/part13-interrupts/README.md
@@ -148,3 +148,5 @@ We update the compare register so the next interrupt will be generated after the
 Then we update the screen to show our progress!
 
 _And... hey presto! You're handling two system timer interrupts like a pro!_
+
+![Timers firing on all cylinders on the Raspberry Pi 4](images/13-interrupts-running.jpg)
diff --git a/part13-interrupts/images/13-interrupts-running.jpg b/part13-interrupts/images/13-interrupts-running.jpg
new file mode 100755
index 0000000..d92edba
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