diff --git a/collectionutils/pom.xml b/collectionutils/pom.xml
index 6d05375efe..810f53847d 100644
--- a/collectionutils/pom.xml
+++ b/collectionutils/pom.xml
@@ -17,7 +17,7 @@
 		<dependency>
 		    <groupId>org.apache.commons</groupId>
 		    <artifactId>commons-collections4</artifactId>
-		    <version>4.0</version>
+		    <version>4.1</version>
 		</dependency>
 		
 		<!-- https://mvnrepository.com/artifact/junit/junit -->
diff --git a/collectionutils/src/test/java/collectionutils/CollectionUtilsGuideTest.java b/collectionutils/src/test/java/collectionutils/CollectionUtilsGuideTest.java
index 0913a56c9d..af925778b8 100644
--- a/collectionutils/src/test/java/collectionutils/CollectionUtilsGuideTest.java
+++ b/collectionutils/src/test/java/collectionutils/CollectionUtilsGuideTest.java
@@ -35,9 +35,8 @@ public class CollectionUtilsGuideTest {
     
     @Test
     public void givenList_WhenAddIgnoreNull_thenNoNullAdded() {
-        List<String> list = Arrays.asList("x", "y", "z");
-        CollectionUtils.addIgnoreNull(list, null);
-        assertFalse(list.contains(null));
+        CollectionUtils.addIgnoreNull(list1, null);
+        assertFalse(list1.contains(null));
     }
     
     @Test
@@ -98,14 +97,15 @@ public class CollectionUtilsGuideTest {
     }
     
     @Test
-    public void givenEmptyList_WhenCheckedIsEmpty_thenTrue() {
+    public void givenNonEmptyList_WhenCheckedIsNotEmpty_thenTrue() {
         List<Customer> emptyList = new ArrayList<Customer>();
         List<Customer> nullList = null;
         
         //Very handy at times where we want to check if a collection is not null and not empty too.
         //isNotEmpty does the opposite. Handy because using ! operator on isEmpty makes it missable while reading
-        assertTrue(CollectionUtils.isEmpty(emptyList));
+        assertTrue(CollectionUtils.isNotEmpty(list1));
         assertTrue(CollectionUtils.isEmpty(nullList));
+        assertTrue(CollectionUtils.isEmpty(emptyList));
     }
     
     @Test