diff --git a/slides/k8s/demo-apps.md b/slides/k8s/demo-apps.md
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--- a/slides/k8s/demo-apps.md
+++ b/slides/k8s/demo-apps.md
@@ -8,6 +8,8 @@
 
 ## The `color` app
 
+- Source code: https://github.com/jpetazzo/color
+
 - Image name: `jpetazzo/color`, `ghcr.io/jpetazzo/color`
 
 - Available for linux/amd64, linux/arm64, linux/arm/v7 platforms