diff --git a/CHANGES.md b/CHANGES.md
index 9c48780e807bd14d87f32d2023318fa2fd0cef68..52c02664ad504f290193834d6f989a350c795096 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -41,7 +41,8 @@ Release Notes.
 * Fix: Envoy error logs are not persisted when no metrics are generated
 * Fix: Memory leakage of low version etcd client. [fix-issue](https://github.com/jurmous/etcd4j/pull/185)
 * Allow multiple definitions as fallback in metadata-service-mapping.yaml file.
-* Fix: NPE when configmap has no data. 
+* Fix: NPE when configmap has no data.
+* Fix: Dynamic Configuration key `slowTraceSegmentThreshold` not work
 
 #### UI
 * Add logo for kong plugin.
diff --git a/oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/AnalyzerModuleProvider.java b/oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/AnalyzerModuleProvider.java
index 4970b961e040ff9d21e398e1b90095794e6558da..f05e93a8682e0ac7b727198c4946b8735a8e7ef7 100644
--- a/oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/AnalyzerModuleProvider.java
+++ b/oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/AnalyzerModuleProvider.java
@@ -122,6 +122,7 @@ public class AnalyzerModuleProvider extends ModuleProvider {
         dynamicConfigurationService.registerConfigChangeWatcher(thresholds);
         dynamicConfigurationService.registerConfigChangeWatcher(uninstrumentedGatewaysConfig);
         dynamicConfigurationService.registerConfigChangeWatcher(traceSampleRateWatcher);
+        dynamicConfigurationService.registerConfigChangeWatcher(traceLatencyThresholdsAndWatcher);
 
         segmentParserService.setListenerManager(listenerManager());