diff --git a/.github/workflows/demo.yml b/.github/workflows/demo.yml
index 90ca967..8ba2e96 100644
--- a/.github/workflows/demo.yml
+++ b/.github/workflows/demo.yml
@@ -7,6 +7,8 @@ on:
   push:
     branches:
       - 'master'
+  schedule:
+    - cron: '0 0 * * *'
 
 jobs:
   demo:
diff --git a/files/demo.csv b/files/demo.csv
index a0850f0..ca9bec1 100644
--- a/files/demo.csv
+++ b/files/demo.csv
@@ -8,4 +8,4 @@ Landon,Mojebol,123.64,1989-05-15,red
 Olive,Pebiogu,0,1955-05-14,green
 Willie,Sowaah,0.001,2010-07-20,red
 Derrick,Rakufag,42,1990-09-10,green
-Lois,Mofninle,-19366059127.6032,1988-08-24,green
+Lois,Mofninle,-19366059127.6032,1988-08-24,red
diff --git a/files/demo_invalid.yml b/files/demo_invalid.yml
index e4181ee..1d28c2d 100644
--- a/files/demo_invalid.yml
+++ b/files/demo_invalid.yml
@@ -1,5 +1,7 @@
 # This schema is invalid because does not match the CSV file (demo.csv).
 
+filename_pattern: /demo\.csv$/
+
 columns:
   - name: Name
     rules:
diff --git a/files/demo_valid.yml b/files/demo_valid.yml
index dd59beb..16004df 100644
--- a/files/demo_valid.yml
+++ b/files/demo_valid.yml
@@ -1,5 +1,7 @@
 # This schema is valid because match the CSV file (demo.csv) perfectly.
 
+filename_pattern: /demo\.csv$/
+
 columns:
   - name: Name
     rules: