diff --git a/monitoring/ceph-mixin/tox.ini b/monitoring/ceph-mixin/tox.ini
index 821a5cd5640..df5bb46ded9 100644
--- a/monitoring/ceph-mixin/tox.ini
+++ b/monitoring/ceph-mixin/tox.ini
@@ -1,5 +1,10 @@
 [tox]
-envlist = lint,jsonnet-{check,lint,fix},promql-query-{test,lint},alerts-check
+envlist =
+    lint,
+    jsonnet-{check,lint,fix},
+    jsonnet-bundler-{install,update},
+    promql-query-{test,lint},
+    alerts-check
 skipsdist = true
 
 [testenv:jsonnet-bundler-{install,update}]