diff --git a/.gimlet/penpot-pr.yaml b/.gimlet/penpot-pr.yaml
index 64e7d2fb0..e53344369 100644
--- a/.gimlet/penpot-pr.yaml
+++ b/.gimlet/penpot-pr.yaml
@@ -9,7 +9,7 @@ cleanup:
 chart:
   name: https://github.com/tokens-studio/tokens-studio-for-penpot.git?branch={{ .BRANCH }}&path=/.gimlet/k8s/preview-frontend/
 values:
-  namespace: {{ .BRANCH | sanitizeDNSName }}
+  namespace: "{{ .BRANCH | sanitizeDNSName }}"
   frontend:
   image:
     pullPolicy: IfNotPresent