diff --git a/build.gradle.kts b/build.gradle.kts
index d2815a54..2ad8cf7f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -90,9 +90,7 @@ dependencies {
     testImplementation("com.github.tomakehurst:wiremock:2.27.2")
     testImplementation("ru.lanwen.wiremock:wiremock-junit5:1.3.1")
     testImplementation("org.assertj:assertj-core:3.24.2")
-    // This cannot be updated to 5.x as it requires Java 11,
-    // but we are running CI on Java 8 in .github/workflows/java-versions.yml.
-    testImplementation("org.mockito:mockito-junit-jupiter:4.11.0")
+    testImplementation("org.mockito:mockito-junit-jupiter:5.4.0")
     testImplementation("com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0")
 }