diff --git a/Chapter03/pom.xml b/Chapter03/pom.xml
index d4c63c0..83d14a5 100644
--- a/Chapter03/pom.xml
+++ b/Chapter03/pom.xml
@@ -42,7 +42,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>
     </dependencies>
 
diff --git a/Chapter03/sensor-data.iml b/Chapter03/sensor-data.iml
index a7693d4..f69be8c 100644
--- a/Chapter03/sensor-data.iml
+++ b/Chapter03/sensor-data.iml
@@ -62,7 +62,7 @@
     <orderEntry type="library" name="Maven: ch.qos.logback:logback-core:1.0.6" level="project" />
     <orderEntry type="library" name="Maven: org.slf4j:log4j-over-slf4j:1.6.6" level="project" />
     <orderEntry type="library" name="Maven: io.netty:netty:3.6.3.Final" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
   </component>
 </module>
 
diff --git a/Chapter06/ai.iml b/Chapter06/ai.iml
index 8dcbdc1..9b4998d 100644
--- a/Chapter06/ai.iml
+++ b/Chapter06/ai.iml
@@ -66,7 +66,7 @@
     <orderEntry type="library" scope="PROVIDED" name="Maven: org.slf4j:log4j-over-slf4j:1.6.6" level="project" />
     <orderEntry type="library" scope="PROVIDED" name="Maven: storm:storm-netty:0.9.0.1" level="project" />
     <orderEntry type="library" scope="PROVIDED" name="Maven: io.netty:netty:3.6.3.Final" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-core:2.1.4" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-annotations:2.1.4" level="project" />
     <orderEntry type="library" scope="TEST" name="Maven: org.hamcrest:hamcrest-core:1.1" level="project" />
diff --git a/Chapter06/pom.xml b/Chapter06/pom.xml
index bd9ed40..9342de0 100644
--- a/Chapter06/pom.xml
+++ b/Chapter06/pom.xml
@@ -38,7 +38,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
diff --git a/Chapter07/analytics.iml b/Chapter07/analytics.iml
index 1ceb280..f86be61 100644
--- a/Chapter07/analytics.iml
+++ b/Chapter07/analytics.iml
@@ -154,8 +154,8 @@
     <orderEntry type="library" name="Maven: com.github.stephenc.eaio-uuid:uuid:3.2.0" level="project" />
     <orderEntry type="library" name="Maven: org.codehaus.jettison:jettison:1.3.1" level="project" />
     <orderEntry type="library" name="Maven: stax:stax-api:1.0.1" level="project" />
-    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.1" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.2" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
     <orderEntry type="library" name="Maven: kafka:core-kafka:0.7.2-mmx1" level="project" />
     <orderEntry type="library" name="Maven: com.github.sgroschupf:zkclient:0.1" level="project" />
     <orderEntry type="library" name="Maven: net.sf.jopt-simple:jopt-simple:3.2" level="project" />
diff --git a/Chapter07/financial-analytics.iml b/Chapter07/financial-analytics.iml
index 1ceb280..f86be61 100644
--- a/Chapter07/financial-analytics.iml
+++ b/Chapter07/financial-analytics.iml
@@ -154,8 +154,8 @@
     <orderEntry type="library" name="Maven: com.github.stephenc.eaio-uuid:uuid:3.2.0" level="project" />
     <orderEntry type="library" name="Maven: org.codehaus.jettison:jettison:1.3.1" level="project" />
     <orderEntry type="library" name="Maven: stax:stax-api:1.0.1" level="project" />
-    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.1" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.2" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
     <orderEntry type="library" name="Maven: kafka:core-kafka:0.7.2-mmx1" level="project" />
     <orderEntry type="library" name="Maven: com.github.sgroschupf:zkclient:0.1" level="project" />
     <orderEntry type="library" name="Maven: net.sf.jopt-simple:jopt-simple:3.2" level="project" />
diff --git a/Chapter07/pom.xml b/Chapter07/pom.xml
index 69f2474..ff47f87 100644
--- a/Chapter07/pom.xml
+++ b/Chapter07/pom.xml
@@ -56,7 +56,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
diff --git a/Chapter08/nlp.iml b/Chapter08/nlp.iml
index f643f1f..15a5862 100644
--- a/Chapter08/nlp.iml
+++ b/Chapter08/nlp.iml
@@ -155,8 +155,8 @@
     <orderEntry type="library" name="Maven: com.github.stephenc.eaio-uuid:uuid:3.2.0" level="project" />
     <orderEntry type="library" name="Maven: org.codehaus.jettison:jettison:1.3.1" level="project" />
     <orderEntry type="library" name="Maven: stax:stax-api:1.0.1" level="project" />
-    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.1" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: org.apache.directory.studio:org.apache.commons.collections:3.2.2" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
     <orderEntry type="library" name="Maven: kafka:core-kafka:0.7.2-mmx1" level="project" />
     <orderEntry type="library" name="Maven: com.github.sgroschupf:zkclient:0.1" level="project" />
     <orderEntry type="library" name="Maven: net.sf.jopt-simple:jopt-simple:3.2" level="project" />
diff --git a/Chapter08/pom.xml b/Chapter08/pom.xml
index 70f1435..cad315b 100644
--- a/Chapter08/pom.xml
+++ b/Chapter08/pom.xml
@@ -61,7 +61,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
diff --git a/Chapter09/advertising.iml b/Chapter09/advertising.iml
index 60ea79c..17271d2 100644
--- a/Chapter09/advertising.iml
+++ b/Chapter09/advertising.iml
@@ -66,7 +66,7 @@
     <orderEntry type="library" name="Maven: org.slf4j:log4j-over-slf4j:1.6.6" level="project" />
     <orderEntry type="library" name="Maven: storm:storm-netty:0.9.0.1" level="project" />
     <orderEntry type="library" name="Maven: io.netty:netty:3.6.3.Final" level="project" />
-    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.1" level="project" />
+    <orderEntry type="library" name="Maven: commons-collections:commons-collections:3.2.2" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-core:2.1.4" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-annotations:2.1.4" level="project" />
   </component>
diff --git a/Chapter09/pom.xml b/Chapter09/pom.xml
index 909f046..575c833 100644
--- a/Chapter09/pom.xml
+++ b/Chapter09/pom.xml
@@ -38,7 +38,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>