diff --git a/docker-compose.yml b/docker-compose.yml
index 5fd547af..f90c116f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -632,7 +632,7 @@ services:
   backrest:
     container_name: backrest
     hostname: backrest
-    image: garethgeorge/backrest:latest
+    image: garethgeorge/backrest:latest@sha256:1308397161321b3c5aeca8acc6bf26eccb990df385f2532d3ce0eaa8b483dedf
     environment:
       BACKREST_DATA: /data # path for backrest data. restic binary and the database are placed here.
       BACKREST_CONFIG: /config/config.json # path for the backrest config file.