diff --git a/Dockerfile b/Dockerfile
index 0a2582e..4c59160 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 ARG CANTALOUPE_VERSION=5.0.5
 
 # Build
-FROM ubuntu:23.10@sha256:f0bb9ee844f7adb284ac036a15469062adbe3a4458c06680216ed73df231cb31 as build
+FROM ubuntu:mantic-20240122@sha256:f0bb9ee844f7adb284ac036a15469062adbe3a4458c06680216ed73df231cb31 as build
 
 ARG DEBIAN_FRONTEND=noninteractive
 ARG CANTALOUPE_VERSION
@@ -61,7 +61,7 @@ RUN cd cantaloupe-src/ && mvn clean package -DskipTests
 
 
 # Package
-FROM ubuntu:23.10@sha256:f0bb9ee844f7adb284ac036a15469062adbe3a4458c06680216ed73df231cb31 as image
+FROM ubuntu:mantic-20240122@sha256:f0bb9ee844f7adb284ac036a15469062adbe3a4458c06680216ed73df231cb31 as image
 LABEL org.opencontainers.image.source="https://github.com/elifesciences/enhanced-preprints-image-server"
 
 ARG CANTALOUPE_VERSION