diff --git a/build.gradle b/build.gradle
index 4bd2183..fc18369 100644
--- a/build.gradle
+++ b/build.gradle
@@ -70,7 +70,7 @@ ext {
 dependencies {
     compileOnly project.deps.gocdPluginApi
     implementation 'com.google.code.gson:gson:2.13.2'
-    implementation 'commons-io:commons-io:2.20.0'
+    implementation 'commons-io:commons-io:2.21.0'
     implementation 'com.squareup.okhttp:okhttp:2.7.5'
     implementation files('libs/go-plugin-util.jar')
     implementation 'javax.xml.bind:jaxb-api:2.3.1'