diff --git a/misc/log4j2.component.properties_bak b/misc/log4j2.component.properties_bak
deleted file mode 100644
index be81378..0000000
--- a/misc/log4j2.component.properties_bak
+++ /dev/null
@@ -1,2 +0,0 @@
-log4j2.contextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
-log4j2.asyncLoggerWaitStrategy=Sleep
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 32f8f85..79ea6b6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,11 +5,12 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.5</version>
+		<version>2.5.2</version>
+		<relativePath />
 	</parent>
 	<groupId>com.stun4j</groupId>
 	<artifactId>stun4j-guid</artifactId>
-	<version>1.1.2</version>
+	<version>1.1.3</version>
 
 	<name>Stun4J Guid</name>
 	<description>Global unique id generator,distributed,ultra fast,easy to use</description>
@@ -75,7 +76,8 @@
 		<log4j2.version>2.14.1</log4j2.version>
 		<commons-lang3.version>3.12.0</commons-lang3.version>
 		<guava.version>30.1.1-jre</guava.version>
-		<disruptor.version>3.4.3</disruptor.version>
+		<disruptor.version>3.4.4</disruptor.version>
+		<dropwizard-metrics.version>4.2.3</dropwizard-metrics.version>
 	</properties>
 
 	<dependencies>
diff --git a/src/main/java/com/stun4j/guid/LocalGuid.java b/src/main/java/com/stun4j/guid/LocalGuid.java
index 53a9ae4..5476925 100644
--- a/src/main/java/com/stun4j/guid/LocalGuid.java
+++ b/src/main/java/com/stun4j/guid/LocalGuid.java
@@ -1,4 +1,4 @@
-/*-
+/*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
@@ -19,7 +19,6 @@
 import static com.stun4j.guid.utils.Asserts.argument;
 import static com.stun4j.guid.utils.Asserts.notNull;
 import static com.stun4j.guid.utils.Asserts.state;
-import static com.stun4j.guid.utils.Strings.leftPad;
 import static com.stun4j.guid.utils.Strings.lenientFormat;
 
 import java.security.SecureRandom;
@@ -176,12 +175,7 @@ public long from(long timeMs) {
   }
 
   public long getTimeMsFromId(long idExpectingSameEpoch) {
-    // assume the id is an unsigned num
-    String binStr = Long.toUnsignedString(idExpectingSameEpoch, 2);
-    binStr = leftPad(binStr, 64, "0");
-    String timeDeltaStr = binStr.substring(1, 42);
-    long back = Long.valueOf(timeDeltaStr, 2);
-    return back + this.epoch;
+    return (idExpectingSameEpoch >> timestampLeftShift & ~(-1L << 41L)) + this.epoch;
   }
   // <-