diff --git a/docker-compose.yml b/docker-compose.yml
index 5ddc6f1f..d445f025 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,6 @@
 services:
   db:
-    image: postgis/postgis:16-3.4
+    image: postgis/postgis:16-3.4@sha256:44126d872ac91993766c341e369c539e8196614321765d36a6f1bab0419a5fa5
     environment:
       POSTGRES_DB: ${GEOINTEL_POSTGRES_DB:-geointel}
       POSTGRES_USER: ${GEOINTEL_POSTGRES_USER:-geointel}