diff --git a/docker/docker-compose-rest.yml b/docker/docker-compose-rest.yml
index 635af00d997..99530983b7c 100644
--- a/docker/docker-compose-rest.yml
+++ b/docker/docker-compose-rest.yml
@@ -175,7 +175,7 @@ services:
       cp -r /opt/solr/server/solr/configsets/search/* search
       precreate-core statistics /opt/solr/server/solr/configsets/statistics
       cp -r /opt/solr/server/solr/configsets/statistics/* statistics
-      exec solr -p 8983 -f -m 4g
+      exec solr -p 8983 -f -m "${SOLR_HEAP:-4g}"
 volumes:
   # Commented out because there are a lot of files in the assetstore
   assetstore: