diff --git a/README.md b/README.md
index 1c7bd26..0bd9d56 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,10 @@ Add these lines to your `pom.xml`.
 <dependency>
   <groupId>com.github.f4b6a3</groupId>
   <artifactId>ulid-creator</artifactId>
-  <version>1.1.0</version>
+  <version>1.1.1</version>
 </dependency>
 ```
-See more options in [maven.org](https://search.maven.org/artifact/com.github.f4b6a3/ulid-creator) and [mvnrepository.com](https://mvnrepository.com/artifact/com.github.f4b6a3/ulid-creator).
+See more options in [maven.org](https://search.maven.org/artifact/com.github.f4b6a3/ulid-creator).
 
 Implementation
 ------------------------------------------------------
diff --git a/pom.xml b/pom.xml
index 6db1ec5..7e5c190 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,8 +34,8 @@
 	<dependencies>
 		<dependency>
 			<groupId>com.github.f4b6a3</groupId>
-			<artifactId>commons</artifactId>
-			<version>1.0.2</version>
+			<artifactId>util</artifactId>
+			<version>1.0.0</version>
 		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
diff --git a/src/main/java/com/github/f4b6a3/ulid/UlidCreator.java b/src/main/java/com/github/f4b6a3/ulid/UlidCreator.java
index 2f4934a..940c82e 100644
--- a/src/main/java/com/github/f4b6a3/ulid/UlidCreator.java
+++ b/src/main/java/com/github/f4b6a3/ulid/UlidCreator.java
@@ -26,7 +26,7 @@ package com.github.f4b6a3.ulid;
 
 import java.util.UUID;
 
-import com.github.f4b6a3.commons.random.Xorshift128PlusRandom;
+import com.github.f4b6a3.util.random.Xorshift128PlusRandom;
 import com.github.f4b6a3.ulid.creator.UlidBasedGuidCreator;
 
 /**
diff --git a/src/main/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreator.java b/src/main/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreator.java
index 5a001dd..ac5efad 100644
--- a/src/main/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreator.java
+++ b/src/main/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreator.java
@@ -28,9 +28,9 @@ import java.util.Random;
 import java.util.UUID;
 
 import com.github.f4b6a3.ulid.util.UlidConverter;
-import com.github.f4b6a3.commons.random.Xorshift128PlusRandom;
-import com.github.f4b6a3.commons.util.FingerprintUtil;
-import com.github.f4b6a3.commons.util.RandomUtil;
+import com.github.f4b6a3.util.random.Xorshift128PlusRandom;
+import com.github.f4b6a3.util.FingerprintUtil;
+import com.github.f4b6a3.util.RandomUtil;
 import com.github.f4b6a3.ulid.exception.UlidCreatorException;
 import com.github.f4b6a3.ulid.strategy.TimestampStrategy;
 import com.github.f4b6a3.ulid.strategy.timestamp.DefaultTimestampStrategy;
diff --git a/src/main/java/com/github/f4b6a3/ulid/util/UlidConverter.java b/src/main/java/com/github/f4b6a3/ulid/util/UlidConverter.java
index fecc005..11d6f6a 100644
--- a/src/main/java/com/github/f4b6a3/ulid/util/UlidConverter.java
+++ b/src/main/java/com/github/f4b6a3/ulid/util/UlidConverter.java
@@ -26,8 +26,8 @@ package com.github.f4b6a3.ulid.util;
 
 import java.util.UUID;
 
-import com.github.f4b6a3.commons.util.Base32Util;
-import com.github.f4b6a3.commons.util.ByteUtil;
+import com.github.f4b6a3.util.Base32Util;
+import com.github.f4b6a3.util.ByteUtil;
 
 public class UlidConverter {
 
diff --git a/src/main/java/com/github/f4b6a3/ulid/util/UlidUtil.java b/src/main/java/com/github/f4b6a3/ulid/util/UlidUtil.java
index 57658eb..0abe55e 100644
--- a/src/main/java/com/github/f4b6a3/ulid/util/UlidUtil.java
+++ b/src/main/java/com/github/f4b6a3/ulid/util/UlidUtil.java
@@ -26,7 +26,7 @@ package com.github.f4b6a3.ulid.util;
 
 import java.time.Instant;
 
-import com.github.f4b6a3.commons.util.Base32Util;
+import com.github.f4b6a3.util.Base32Util;
 
 public class UlidUtil {
 
diff --git a/src/test/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreatorTest.java b/src/test/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreatorTest.java
index af6794f..16fff10 100644
--- a/src/test/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreatorTest.java
+++ b/src/test/java/com/github/f4b6a3/ulid/creator/UlidBasedGuidCreatorTest.java
@@ -5,7 +5,7 @@ import java.util.UUID;
 
 import org.junit.Test;
 
-import com.github.f4b6a3.commons.random.Xorshift128PlusRandom;
+import com.github.f4b6a3.util.random.Xorshift128PlusRandom;
 import com.github.f4b6a3.ulid.exception.UlidCreatorException;
 import com.github.f4b6a3.ulid.strategy.timestamp.FixedTimestampStretegy;
 
diff --git a/src/test/java/com/github/f4b6a3/ulid/util/UlidUtilTest.java b/src/test/java/com/github/f4b6a3/ulid/util/UlidUtilTest.java
index 173af03..45da9ff 100644
--- a/src/test/java/com/github/f4b6a3/ulid/util/UlidUtilTest.java
+++ b/src/test/java/com/github/f4b6a3/ulid/util/UlidUtilTest.java
@@ -5,8 +5,8 @@ import java.time.Instant;
 
 import org.junit.Test;
 
-import com.github.f4b6a3.commons.util.Base32Util;
-import com.github.f4b6a3.commons.util.ByteUtil;
+import com.github.f4b6a3.util.Base32Util;
+import com.github.f4b6a3.util.ByteUtil;
 import com.github.f4b6a3.ulid.exception.InvalidUlidException;
 import com.github.f4b6a3.ulid.util.UlidUtil;