diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 9e9003f2b..7f7032a9f 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -44,6 +44,7 @@
     <action issue="LANG-834" type="add" dev="britter">Validate: add inclusiveBetween and exclusiveBetween overloads for primitive types</action>
     <action issue="LANG-900" type="add" dev="britter" due-to="Duncan Jones">New RandomUtils class</action>
     <action issue="LANG-915" type="fix" dev="britter" due-to="Sergio Fernández">Wrong locale handling in LocaleUtils.toLocale()</action>
+    <action issue="LANG-966" type="add" dev="ggregory">Add IBM iSeries 5 OS detection</action>
   </release>
 
   <release version="3.2.1" date="2014-01-05" description="Bug fix for 3.2">
diff --git a/src/main/java/org/apache/commons/lang3/SystemUtils.java b/src/main/java/org/apache/commons/lang3/SystemUtils.java
index 97dbb3222..1b5df592e 100644
--- a/src/main/java/org/apache/commons/lang3/SystemUtils.java
+++ b/src/main/java/org/apache/commons/lang3/SystemUtils.java
@@ -957,6 +957,18 @@ public class SystemUtils {
      * @since 2.0
      */
     public static final boolean IS_OS_HP_UX = getOSMatchesName("HP-UX");
+    
+    /**
+     * <p>
+     * Is {@code true} if this is IBM iSeries 5.
+     * </p>
+     * <p>
+     * The field will return {@code false} if {@code OS_NAME} is {@code null}.
+     * </p>
+     *
+     * @since 3.3
+     */
+    public static final boolean IS_OS_ISERIES_5 = getOSMatchesName("i5/OS");
 
     /**
      * <p>