diff --git a/chapter09/tacocloud-email/pom.xml b/chapter09/tacocloud-email/pom.xml
index 948b94a6..b6a01f0e 100644
--- a/chapter09/tacocloud-email/pom.xml
+++ b/chapter09/tacocloud-email/pom.xml
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-text</artifactId>
-            <version>1.2</version>
+            <version>1.9</version>
         </dependency>
 
         <!-- Lombok -->
diff --git a/chapter11-12-cassandra/tacocloud-email/pom.xml b/chapter11-12-cassandra/tacocloud-email/pom.xml
index 18d38d35..775f5969 100644
--- a/chapter11-12-cassandra/tacocloud-email/pom.xml
+++ b/chapter11-12-cassandra/tacocloud-email/pom.xml
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-text</artifactId>
-            <version>1.2</version>
+            <version>1.9</version>
         </dependency>
 
         <!-- Lombok -->
diff --git a/chapter11-12-mongodb/tacocloud-email/pom.xml b/chapter11-12-mongodb/tacocloud-email/pom.xml
index d9ed98ef..813963b2 100644
--- a/chapter11-12-mongodb/tacocloud-email/pom.xml
+++ b/chapter11-12-mongodb/tacocloud-email/pom.xml
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-text</artifactId>
-            <version>1.2</version>
+            <version>1.9</version>
         </dependency>
 
         <!-- Lombok -->