diff --git a/remove-bracket-characters/pom.xml b/remove-bracket-characters/pom.xml
index c4a545c0..f1dc70cc 100644
--- a/remove-bracket-characters/pom.xml
+++ b/remove-bracket-characters/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>3.20.0</version>
+            <version>3.21.0</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/string-delete-digits/pom.xml b/string-delete-digits/pom.xml
index 0dbca48d..263ca339 100644
--- a/string-delete-digits/pom.xml
+++ b/string-delete-digits/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
-            <version>3.20.0</version>
+            <version>3.21.0</version>
         </dependency>
     </dependencies>
 </project>