diff --git a/operations/mimir/config.libsonnet b/operations/mimir/config.libsonnet
index 5187b841b27..fdb8bbb0abf 100644
--- a/operations/mimir/config.libsonnet
+++ b/operations/mimir/config.libsonnet
@@ -196,7 +196,7 @@
       ) else {}
     ),
 
-    // Shared between the Ruler and Querier
+    // Querier component config (shared between the ruler and querier).
     queryConfig: {
       'runtime-config.file': '/etc/cortex/overrides.yaml',
 
@@ -239,6 +239,11 @@
       else {}
     ),
 
+    // PromQL query engine config (shared between all services running PromQL engine, like the ruler and querier).
+    queryEngineConfig: {
+      // Keep it even if empty, to allow downstream projects to easily configure it.
+    },
+
     ringConfig: {
       'consul.hostname': 'consul.%s.svc.cluster.local:8500' % $._config.namespace,
       'ring.prefix': '',
diff --git a/operations/mimir/querier.libsonnet b/operations/mimir/querier.libsonnet
index 664c759bebe..2ec8d868577 100644
--- a/operations/mimir/querier.libsonnet
+++ b/operations/mimir/querier.libsonnet
@@ -8,6 +8,7 @@
     $._config.storageConfig +
     $._config.blocksStorageConfig +
     $._config.queryConfig +
+    $._config.queryEngineConfig +
     $._config.distributorConfig +
     {
       target: 'querier',
diff --git a/operations/mimir/ruler.libsonnet b/operations/mimir/ruler.libsonnet
index 6fbed6bc9b1..1e98282023d 100644
--- a/operations/mimir/ruler.libsonnet
+++ b/operations/mimir/ruler.libsonnet
@@ -8,6 +8,7 @@
     $._config.storageConfig +
     $._config.blocksStorageConfig +
     $._config.queryConfig +
+    $._config.queryEngineConfig +
     $._config.distributorConfig +
     $._config.rulerClientConfig +
     $._config.rulerLimitsConfig +