diff --git a/application/src/main/java/run/halo/app/plugin/DefaultReactiveSettingFetcher.java b/application/src/main/java/run/halo/app/plugin/DefaultReactiveSettingFetcher.java
index 86492a44a..d8cf2ccd4 100644
--- a/application/src/main/java/run/halo/app/plugin/DefaultReactiveSettingFetcher.java
+++ b/application/src/main/java/run/halo/app/plugin/DefaultReactiveSettingFetcher.java
@@ -18,13 +18,13 @@ import org.springframework.lang.NonNull;
 import org.springframework.lang.Nullable;
 import reactor.core.publisher.Mono;
 import run.halo.app.extension.ConfigMap;
-import run.halo.app.extension.DefaultExtensionMatcher;
 import run.halo.app.extension.ExtensionClient;
+import run.halo.app.extension.ExtensionMatcher;
+import run.halo.app.extension.ListOptions;
 import run.halo.app.extension.ReactiveExtensionClient;
 import run.halo.app.extension.controller.Controller;
 import run.halo.app.extension.controller.ControllerBuilder;
 import run.halo.app.extension.controller.Reconciler;
-import run.halo.app.extension.router.selector.FieldSelector;
 import run.halo.app.infra.utils.JsonParseException;
 import run.halo.app.infra.utils.JsonUtils;
 
@@ -185,16 +185,17 @@ public class DefaultReactiveSettingFetcher
 
     @Override
     public Controller setupWith(ControllerBuilder builder) {
-        var configMap = new ConfigMap();
-        var extensionMatcher =
-            DefaultExtensionMatcher.builder(blockingClient, configMap.groupVersionKind())
-                .fieldSelector(FieldSelector.of(equal("metadata.name", configMapName)))
-                .build();
+        ExtensionMatcher matcher =
+            extension -> configMapName.equals(extension.getMetadata().getName());
         return builder
-            .extension(configMap)
-            .syncAllOnStart(false)
-            .onAddMatcher(extensionMatcher)
-            .onUpdateMatcher(extensionMatcher)
+            .extension(new ConfigMap())
+            .syncAllOnStart(true)
+            .syncAllListOptions(ListOptions.builder()
+                .fieldQuery(equal("metadata.name", configMapName))
+                .build())
+            .onAddMatcher(matcher)
+            .onUpdateMatcher(matcher)
+            .onDeleteMatcher(matcher)
             .build();
     }