diff --git a/Dockerfile b/Dockerfile
index a25467f26a..e63b00c9a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,7 +27,7 @@ RUN npm run build
 #########################################
 # Package static build files into nginx #
 #########################################
-FROM nginxinc/nginx-unprivileged:stable-alpine@sha256:fd3314e343bad2de4e1127ef58be122abbfa7e09572fa46ae62fcddb6b3f21c5 AS cyberchef
+FROM nginxinc/nginx-unprivileged:stable-alpine@sha256:93722936b82ec8a1178d48448e619226680d2de3706a1640800e186cd5fa7fd3 AS cyberchef
 
 LABEL maintainer="GCHQ <oss@gchq.gov.uk>"