diff --git a/build.gradle b/build.gradle
index 3dfe6504..ec90bb34 100644
--- a/build.gradle
+++ b/build.gradle
@@ -304,8 +304,6 @@ project('spring-statemachine-kryo') {
 			exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
 		}
 		testCompile 'org.springframework:spring-test'
-		testCompile 'org.hamcrest:hamcrest-core'
-		testCompile 'org.hamcrest:hamcrest-library'
 		testCompile("org.junit.jupiter:junit-jupiter-api")
 		testCompile("org.junit.jupiter:junit-jupiter-engine")
 		testRuntime 'org.apache.logging.log4j:log4j-core'
diff --git a/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/KryoStateMachineSerialisationServiceTests.java b/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/KryoStateMachineSerialisationServiceTests.java
index df011170..6b8cb404 100644
--- a/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/KryoStateMachineSerialisationServiceTests.java
+++ b/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/KryoStateMachineSerialisationServiceTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,8 +15,7 @@
  */
 package org.springframework.statemachine.kryo;
 
-import static org.hamcrest.CoreMatchers.is;
-import static org.hamcrest.MatcherAssert.assertThat;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -50,6 +49,6 @@ public class KryoStateMachineSerialisationServiceTests {
 		byte[] bytes = service.serialiseStateMachineContext(root);
 
 		StateMachineContext<String, String> context = service.deserialiseStateMachineContext(bytes);
-		assertThat(context.getChilds().size(), is(2));
+		assertThat(context.getChilds()).hasSize(2);
 	}
 }
diff --git a/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/StateMachineContextSerializerTests.java b/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/StateMachineContextSerializerTests.java
index 0bc68b7a..e30ac7b4 100644
--- a/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/StateMachineContextSerializerTests.java
+++ b/spring-statemachine-kryo/src/test/java/org/springframework/statemachine/kryo/StateMachineContextSerializerTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 the original author or authors.
+ * Copyright 2018-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,8 +15,7 @@
  */
 package org.springframework.statemachine.kryo;
 
-import static org.hamcrest.CoreMatchers.equalTo;
-import static org.hamcrest.MatcherAssert.assertThat;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -98,7 +97,7 @@ public class StateMachineContextSerializerTests {
 
 		Input inputTo = new Input(new ByteArrayInputStream(outStreamFrom.toByteArray()));
 		StateMachineContext<String, String> rootTo = (StateMachineContext<String, String>) kryoTo.readClassAndObject(inputTo);
-		assertThat(rootFrom, equalTo(rootTo));
+		assertThat(rootFrom).isEqualTo(rootTo);
 	}
 
 	/**