diff --git a/Dockerfile b/Dockerfile
index 9ce25c5..46e5535 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:latest
+FROM alpine:latest@sha256:28bd5fe8b56d1bd048e5babf5b10710ebe0bae67db86916198a6eec434943f8b
 EXPOSE 137/udp 138/udp 139 445
 VOLUME ["/etc",\
     "/var/cache/samba",\
diff --git a/docker-compose.yml b/docker-compose.yml
index 1f12edc..8fefedb 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,7 +2,7 @@ version: "3.4"
 
 services:
   samba:
-    image: dperson/samba
+    image: dperson/samba@sha256:66088b78a19810dd1457a8f39340e95e663c728083efa5fe7dc0d40b2478e869
     environment:
       TZ: "EST5EDT"
     networks: