diff --git a/model/instance/lifecycle/destroy.go b/model/instance/lifecycle/destroy.go
index 6d1ee6fe433..f9b47e71c01 100644
--- a/model/instance/lifecycle/destroy.go
+++ b/model/instance/lifecycle/destroy.go
@@ -10,6 +10,7 @@ import (
 	"github.com/cozy/cozy-stack/model/app"
 	"github.com/cozy/cozy-stack/model/instance"
 	job "github.com/cozy/cozy-stack/model/job"
+	"github.com/cozy/cozy-stack/model/rag"
 	"github.com/cozy/cozy-stack/pkg/config/config"
 	"github.com/cozy/cozy-stack/pkg/consts"
 	"github.com/cozy/cozy-stack/pkg/couchdb"
@@ -76,6 +77,10 @@ func Destroy(domain string) error {
 		return err
 	}
 
+	if err := rag.CleanInstance(inst); err != nil {
+		return err
+	}
+
 	// Reload the instance, it can have been updated in CouchDB if the instance
 	// had at least one account and was not up-to-date for its indexes/views.
 	inst, err = instance.Get(domain)
diff --git a/model/rag/index.go b/model/rag/index.go
index 3962e90932f..9d620c19224 100644
--- a/model/rag/index.go
+++ b/model/rag/index.go
@@ -252,3 +252,29 @@ func pushJob(inst *instance.Instance, doctype string) error {
 	})
 	return err
 }
+
+func CleanInstance(inst *instance.Instance) error {
+	ragServer := inst.RAGServer()
+	if ragServer.URL == "" {
+		return nil
+	}
+	u, err := url.Parse(ragServer.URL)
+	if err != nil {
+		return err
+	}
+	u.Path = fmt.Sprintf("/instances/%s", inst.Domain)
+	req, err := http.NewRequest(http.MethodDelete, u.String(), nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Add(echo.HeaderAuthorization, "Bearer "+ragServer.APIKey)
+	res, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer res.Body.Close()
+	if res.StatusCode >= 500 {
+		return fmt.Errorf("DELETE status code: %d", res.StatusCode)
+	}
+	return nil
+}