diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7f1f206b..48eb6a64 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -12,7 +12,7 @@ ARG PYROSCOPE_VERSION=v1.14.0
 ARG OPENTELEMETRY_COLLECTOR_VERSION=v0.132.4
 
 # hadolint global ignore=DL3059
-FROM redhat/ubi9:9.6-1755678605 AS builder
+FROM redhat/ubi9:9.6-1755678605@sha256:b68c21b2dd3e72abcf2f8dcfc77580e4030564d1243bfcb7cd64ccc5aa3e0a25 AS builder
 
 RUN mkdir /otel-lgtm