diff --git a/hooks/env b/hooks/env
index 8b4a648..0927164 100755
--- a/hooks/env
+++ b/hooks/env
@@ -5,7 +5,7 @@
 
 [ -n "$SOURCE_URL" ]     || SOURCE_URL=https://github.com/ecmwf/skinnywms
 [ -n "$DOCKER_REPO" ]    || DOCKER_REPO=ecmwf/skinnywms
-[ -n "$MAGICS_IMAGE" ]   || MAGICS_IMAGE=ecmwf/magics:latest
+[ -n "$MAGICS_IMAGE" ]   || MAGICS_IMAGE=ecmwf/magics:4.2.4
 
 [ -n "$SOURCE_BRANCH" ]  || SOURCE_BRANCH=$(git symbolic-ref -q --short HEAD)
 if [[ "${SOURCE_BRANCH/-*/}" =~ ^[0-9][0-9.]*$ ]]; then