diff --git a/pom.xml b/pom.xml
index b905b2c..16c9724 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 
 	<groupId>com.github.f4b6a3</groupId>
 	<artifactId>ulid-creator</artifactId>
-	<version>1.0.1-SNAPSHOT</version>
+	<version>1.0.0-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>ulid-creator</name>
diff --git a/src/main/java/com/github/f4b6a3/ulid/guid/GuidCreator.java b/src/main/java/com/github/f4b6a3/ulid/guid/GuidCreator.java
index 1d4fcd4..cd55936 100644
--- a/src/main/java/com/github/f4b6a3/ulid/guid/GuidCreator.java
+++ b/src/main/java/com/github/f4b6a3/ulid/guid/GuidCreator.java
@@ -33,6 +33,7 @@ import com.github.f4b6a3.ulid.util.FingerprintUtil;
 import com.github.f4b6a3.ulid.util.UlidUtil;
 import com.github.f4b6a3.ulid.exception.UlidCreatorException;
 import com.github.f4b6a3.ulid.random.Xorshift128PlusRandom;
+import com.github.f4b6a3.ulid.random.XorshiftRandom;
 import com.github.f4b6a3.ulid.timestamp.DefaultTimestampStrategy;
 
 /**