diff --git a/approvaltests-tests/pom.xml b/approvaltests-tests/pom.xml
index c20c9d77..40b2d3b4 100644
--- a/approvaltests-tests/pom.xml
+++ b/approvaltests-tests/pom.xml
@@ -43,7 +43,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.12.0</version>
+            <version>3.13.0</version>
             <optional>true</optional>
         </dependency>
         <dependency>
diff --git a/approvaltests-util-tests/pom.xml b/approvaltests-util-tests/pom.xml
index f0f2e53b..4aedc535 100644
--- a/approvaltests-util-tests/pom.xml
+++ b/approvaltests-util-tests/pom.xml
@@ -38,7 +38,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.12.0</version>
+            <version>3.13.0</version>
             <optional>true</optional>
         </dependency>
         <dependency>
diff --git a/approvaltests-util/pom.xml b/approvaltests-util/pom.xml
index 9311f79b..8850eb6d 100644
--- a/approvaltests-util/pom.xml
+++ b/approvaltests-util/pom.xml
@@ -70,7 +70,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.12.0</version>
+            <version>3.13.0</version>
             <optional>true</optional>
         </dependency>
         <dependency>
diff --git a/approvaltests/pom.xml b/approvaltests/pom.xml
index 10660b8a..25c617a3 100644
--- a/approvaltests/pom.xml
+++ b/approvaltests/pom.xml
@@ -89,7 +89,7 @@
         <dependency>
             <groupId>commons-net</groupId>
             <artifactId>commons-net</artifactId>
-            <version>3.12.0</version>
+            <version>3.13.0</version>
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>