diff --git a/services/outline-role-sync/Dockerfile b/services/outline-role-sync/Dockerfile
index 2a3483af..c0f561f9 100644
--- a/services/outline-role-sync/Dockerfile
+++ b/services/outline-role-sync/Dockerfile
@@ -1,4 +1,4 @@
-FROM denoland/deno:2.1.4
+FROM denoland/deno:2.7.12@sha256:9c47e8b8fa41e91fe2dd1448888244a56c4ec90124333d5341319b043a3a6ca0
 
 WORKDIR /app