diff --git a/pom.xml b/pom.xml
index 9907b7ee..5636b4f1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -78,7 +78,7 @@
 		<java-module-name>spring.hateoas</java-module-name>
 		<jsonpath.version>2.2.0</jsonpath.version>
 		<jsr305.version>3.0.2</jsr305.version>
-		<junit.version>5.3.2</junit.version>
+		<junit.version>5.4.1</junit.version>
 		<minidevjson.version>2.2.1</minidevjson.version>
 		<reactor-bom.version>Californium-SR4</reactor-bom.version>
 		<slf4j.version>1.7.25</slf4j.version>
diff --git a/src/test/java/org/springframework/hateoas/RepresentationModelUnitTest.java b/src/test/java/org/springframework/hateoas/RepresentationModelUnitTest.java
index 75e30715..784c9755 100755
--- a/src/test/java/org/springframework/hateoas/RepresentationModelUnitTest.java
+++ b/src/test/java/org/springframework/hateoas/RepresentationModelUnitTest.java
@@ -85,8 +85,9 @@ public class RepresentationModelUnitTest {
 	@Test
 	public void preventsNullLinkBeingAdded() {
 
+		RepresentationModel<?> support = new RepresentationModel<>();
+
 		assertThatIllegalArgumentException().isThrownBy(() -> {
-			RepresentationModel<?> support = new RepresentationModel<>();
 			support.add((Link) null);
 		});
 	}
@@ -94,8 +95,9 @@ public class RepresentationModelUnitTest {
 	@Test
 	public void preventsNullLinksBeingAdded() {
 
+		RepresentationModel<?> support = new RepresentationModel<>();
+
 		assertThatIllegalArgumentException().isThrownBy(() -> {
-			RepresentationModel<?> support = new RepresentationModel<>();
 			support.add((Iterable<Link>) null);
 		});
 	}
diff --git a/src/test/java/org/springframework/hateoas/UriTemplateUnitTest.java b/src/test/java/org/springframework/hateoas/UriTemplateUnitTest.java
index 26cdd249..0ed49110 100755
--- a/src/test/java/org/springframework/hateoas/UriTemplateUnitTest.java
+++ b/src/test/java/org/springframework/hateoas/UriTemplateUnitTest.java
@@ -150,8 +150,9 @@ public class UriTemplateUnitTest {
 	@Test
 	public void rejectsMissingRequiredPathVariable() {
 
+		UriTemplate template = UriTemplate.of("/foo/{bar}");
+
 		assertThatIllegalArgumentException().isThrownBy(() -> {
-			UriTemplate template = UriTemplate.of("/foo/{bar}");
 			template.expand(Collections.emptyMap());
 		});
 	}
diff --git a/src/test/java/org/springframework/hateoas/mediatype/hal/HalEmbeddedBuilderUnitTest.java b/src/test/java/org/springframework/hateoas/mediatype/hal/HalEmbeddedBuilderUnitTest.java
index 41b5837a..58ea5134 100755
--- a/src/test/java/org/springframework/hateoas/mediatype/hal/HalEmbeddedBuilderUnitTest.java
+++ b/src/test/java/org/springframework/hateoas/mediatype/hal/HalEmbeddedBuilderUnitTest.java
@@ -176,8 +176,10 @@ public class HalEmbeddedBuilderUnitTest {
 	@Test
 	public void rejectsInvalidEmbeddedWrapper() {
 
+		HalEmbeddedBuilder builder = new HalEmbeddedBuilder(provider, curieProvider, false);
+
 		assertThatIllegalStateException().isThrownBy(() -> {
-			new HalEmbeddedBuilder(provider, curieProvider, false).add(mock(EmbeddedWrapper.class));
+			builder.add(mock(EmbeddedWrapper.class));
 		});
 	}
 
diff --git a/src/test/java/org/springframework/hateoas/server/mvc/ControllerLinkBuilderUnitTest.java b/src/test/java/org/springframework/hateoas/server/mvc/ControllerLinkBuilderUnitTest.java
index 1a59da75..21e21880 100755
--- a/src/test/java/org/springframework/hateoas/server/mvc/ControllerLinkBuilderUnitTest.java
+++ b/src/test/java/org/springframework/hateoas/server/mvc/ControllerLinkBuilderUnitTest.java
@@ -301,9 +301,10 @@ public class ControllerLinkBuilderUnitTest extends TestUtils {
 	@Test
 	public void rejectsMissingPathVariable() {
 
+		ControllerLinkBuilder builder = linkTo(methodOn(ControllerWithMethods.class).methodWithPathVariable(null));
+
 		assertThatIllegalArgumentException().isThrownBy(() -> {
-			linkTo(methodOn(ControllerWithMethods.class).methodWithPathVariable(null))//
-					.withSelfRel().expand();
+			builder.withSelfRel().expand();
 		});
 	}
 
@@ -313,10 +314,10 @@ public class ControllerLinkBuilderUnitTest extends TestUtils {
 	@Test
 	public void rejectsMissingRequiredRequestParam() {
 
-		assertThatIllegalArgumentException().isThrownBy(() -> {
-			Link link = linkTo(methodOn(ControllerWithMethods.class).methodWithRequestParam(null)).withSelfRel();
+		Link link = linkTo(methodOn(ControllerWithMethods.class).methodWithRequestParam(null)).withSelfRel();
 
-			assertThat(link.getVariableNames()).containsExactly("id");
+		assertThat(link.getVariableNames()).containsExactly("id");
+		assertThatIllegalArgumentException().isThrownBy(() -> {
 
 			link.expand();
 		});
@@ -521,7 +522,8 @@ public class ControllerLinkBuilderUnitTest extends TestUtils {
 
 		Link link = linkTo(methodOn(ControllerWithMethods.class).methodForNextPage("1", null, 5)).withSelfRel();
 
-		assertThat(link.getVariables()).containsExactly(new TemplateVariable("offset", VariableType.REQUEST_PARAM_CONTINUED));
+		assertThat(link.getVariables())
+				.containsExactly(new TemplateVariable("offset", VariableType.REQUEST_PARAM_CONTINUED));
 
 		UriComponents components = toComponents(link);