diff --git a/core/build.gradle b/core/build.gradle
index 7613ed58ccc..4322eee9e06 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -218,7 +218,7 @@ dependencies {
     // Synthetic JAR used for MountableFileTest and DirectoryTarResourceTest
     testCompile files('testlib/repo/fakejar/fakejar/0/fakejar-0.jar')
 
-    testCompile 'org.assertj:assertj-core:3.18.1'
+    testCompile 'org.assertj:assertj-core:3.19.0'
     testCompile project(':test-support')
 
     jarFileTestCompileOnly "org.projectlombok:lombok:${lombok.version}"