diff --git a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
index 4e7b947..2cc8a2f 100644
--- a/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
+++ b/src/bld/java/rife/bld/extension/CompileKotlinOperationBuild.java
@@ -56,7 +56,7 @@ public class CompileKotlinOperationBuild extends Project {
         scope(test)
                 .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 10, 2)))
                 .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 10, 2)))
-                .include(dependency("org.assertj", "assertj-core", version(3, 25, 3)));
+                .include(dependency("org.assertj", "assertj-core", version(3, 26, 0)));
 
         javadocOperation()
                 .javadocOptions()