diff --git a/build.gradle b/build.gradle
index 4c509c1..5e1372b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,7 +23,7 @@ dependencies {
   // optional dependencies for using Spock
   testImplementation "org.hamcrest:hamcrest-core:2.2"   // only necessary if Hamcrest matchers are used
   testRuntimeOnly 'net.bytebuddy:byte-buddy:1.12.8' // allows mocking of classes (in addition to interfaces)
-  testRuntimeOnly "org.objenesis:objenesis:3.2"      // allows mocking of classes without default constructor (together with ByteBuddy or CGLIB)
+  testRuntimeOnly "org.objenesis:objenesis:3.3"      // allows mocking of classes without default constructor (together with ByteBuddy or CGLIB)
 
   // dependencies used by examples in this project
   testRuntimeOnly "com.h2database:h2:2.1.214"