diff --git a/identity-provisioner/Containerfile b/identity-provisioner/Containerfile
index 3e88bc2..c30138f 100644
--- a/identity-provisioner/Containerfile
+++ b/identity-provisioner/Containerfile
@@ -1,4 +1,4 @@
-FROM lldap/lldap:stable AS lldap
+FROM lldap/lldap:stable@sha256:2a8454b668c1aba7157e832eab0e242e1e7eb5fb7591d7e7774ba05286511ca8 AS lldap
 FROM python:3.12-slim@sha256:d764629ce0ddd8c71fd371e9901efb324a95789d2315a47db7e4d27e78f1b0e9
 RUN useradd --create-home --uid 10001 provisioner
 WORKDIR /app