diff --git a/build.gradle b/build.gradle
index 082a1d2..36e9f41 100644
--- a/build.gradle
+++ b/build.gradle
@@ -57,7 +57,7 @@ dependencies {
   testImplementation 'org.junit.jupiter:junit-jupiter-params'
   testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'
   testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
-  testImplementation 'org.assertj:assertj-core:3.26.0'
+  testImplementation 'org.assertj:assertj-core:3.26.3'
   testImplementation 'org.mockito:mockito-core:5.12.0'
   testImplementation "cd.go.plugin:go-plugin-api:$gocdPluginApiVersion"
   testImplementation 'org.skyscreamer:jsonassert:1.5.3'