diff --git a/build/charts/mercure/values.yaml b/build/charts/mercure/values.yaml
index 7b1392a..035ad55 100644
--- a/build/charts/mercure/values.yaml
+++ b/build/charts/mercure/values.yaml
@@ -8,7 +8,7 @@ image:
   repository: dunglas/mercure
   pullPolicy: IfNotPresent
   # Overrides the image tag whose default is the chart appVersion.
-  tag: v0.20
+  tag: v0.21
 
 env:
   - name: SERVER_NAME