diff --git a/commons-ip-math/src/main/java/com/github/jgonian/ipmath/Ipv6.java b/commons-ip-math/src/main/java/com/github/jgonian/ipmath/Ipv6.java
index 57b1f1a..e0574ad 100644
--- a/commons-ip-math/src/main/java/com/github/jgonian/ipmath/Ipv6.java
+++ b/commons-ip-math/src/main/java/com/github/jgonian/ipmath/Ipv6.java
@@ -24,7 +24,6 @@
 package com.github.jgonian.ipmath;
 
 import java.math.BigInteger;
-import java.util.regex.Pattern;
 
 import static java.math.BigInteger.ONE;