diff --git a/divviup/build.gradle.kts b/divviup/build.gradle.kts
index 9810a40..2be41b7 100644
--- a/divviup/build.gradle.kts
+++ b/divviup/build.gradle.kts
@@ -69,7 +69,7 @@ dependencies {
     testImplementation("com.fasterxml.jackson.core:jackson-databind:2.21.2")
     testImplementation("ch.qos.logback:logback-core:1.5.32")
     testImplementation("ch.qos.logback:logback-classic:1.5.32")
-    testImplementation("commons-io:commons-io:2.21.0")
+    testImplementation("commons-io:commons-io:2.22.0")
     testImplementation("org.mockito:mockito-core:5.23.0")
     androidTestImplementation(project(":divviup:commontest"))
     androidTestImplementation("androidx.test.ext:junit:1.3.0")