diff --git a/README.Rmd b/README.Rmd
index 3645837..4f752a0 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -17,6 +17,7 @@ knitr::opts_chunk$set(
 
 <!-- badges: start -->
 [![R-CMD-check](https://github.com/tmelliott/ts/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/tmelliott/ts/actions/workflows/R-CMD-check.yaml)
+[![Demo](https://github.com/tmelliott/ts/actions/workflows/check-demo.yaml/badge.svg)](https://github.com/tmelliott/ts/actions/workflows/check-demo.yaml)
 <!-- badges: end -->
 
 The **ts** package makes it easy for users to write functions that can be used in [**rserve-ts**](https://www.npmjs.com/package/rserve-ts) applications.
diff --git a/README.md b/README.md
index 6258324..3a2f842 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@
 <!-- badges: start -->
 
 [![R-CMD-check](https://github.com/tmelliott/ts/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/tmelliott/ts/actions/workflows/R-CMD-check.yaml)
+[![Demo](https://github.com/tmelliott/ts/actions/workflows/check-demo.yaml/badge.svg)](https://github.com/tmelliott/ts/actions/workflows/check-demo.yaml)
 <!-- badges: end -->
 
 The **ts** package makes it easy for users to write functions that can