diff --git a/kubernetes/solr.yaml b/kubernetes/solr.yaml
index 7fe899d7..9192d831 100644
--- a/kubernetes/solr.yaml
+++ b/kubernetes/solr.yaml
@@ -34,6 +34,9 @@ spec:
             - docker-entrypoint.sh
             - solr-precreate
             - docspell
+          env:
+            - name: SOLR_OPTS
+              value: "-Dsolr.modules=analysis-extras"
           livenessProbe: # Check for a 302 response
             httpGet:
               path: /solr/admin/info/system