diff --git a/CHANGES.md b/CHANGES.md
index 23f81e43e..10f0475ee 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -11,6 +11,7 @@ Release Notes.
 * Add servicecomb-2.x plugin and Testcase.
 * Fix NPE in gateway plugin when the timer triggers webflux webclient call.
 * Add an optional plugin, trace-sampler-cpu-policy-plugin, which could disable trace collecting in high CPU load.
+* Change the dateformat of logs to `yyyy-MM-dd HH:mm:ss.SSS`(was `yyyy-MM-dd HH:mm:ss:SSS`).
 
 #### Documentation
 
diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/converters/DateConverter.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/converters/DateConverter.java
index 8bfcdc623..1ebfdbf13 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/converters/DateConverter.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/converters/DateConverter.java
@@ -31,7 +31,7 @@ public class DateConverter implements Converter {
 
     @Override
     public String convert(LogEvent logEvent) {
-        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS").format(new Date());
+        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS").format(new Date());
     }
 
     @Override