diff --git a/spring-test/src/main/java/org/springframework/test/util/JsonPathExpectationsHelper.java b/spring-test/src/main/java/org/springframework/test/util/JsonPathExpectationsHelper.java
index f64b374dd1..e8c1b47522 100644
--- a/spring-test/src/main/java/org/springframework/test/util/JsonPathExpectationsHelper.java
+++ b/spring-test/src/main/java/org/springframework/test/util/JsonPathExpectationsHelper.java
@@ -69,7 +69,7 @@ public class JsonPathExpectationsHelper {
 	 * @param matcher the matcher with which to assert the result
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> void assertValue(String content, Matcher<T> matcher) {
+	public <T> void assertValue(String content, Matcher<? super T> matcher) {
 		T value = (T) evaluateJsonPath(content);
 		MatcherAssert.assertThat("JSON path \"" + this.expression + "\"", value, matcher);
 	}
@@ -84,7 +84,7 @@ public class JsonPathExpectationsHelper {
 	 * @since 4.3.3
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> void assertValue(String content, Matcher<T> matcher, Class<T> targetType) {
+	public <T> void assertValue(String content, Matcher<? super T> matcher, Class<T> targetType) {
 		T value = (T) evaluateJsonPath(content, targetType);
 		MatcherAssert.assertThat("JSON path \"" + this.expression + "\"", value, matcher);
 	}
diff --git a/spring-test/src/main/java/org/springframework/test/util/XpathExpectationsHelper.java b/spring-test/src/main/java/org/springframework/test/util/XpathExpectationsHelper.java
index bea2c6d87f..19255b7365 100644
--- a/spring-test/src/main/java/org/springframework/test/util/XpathExpectationsHelper.java
+++ b/spring-test/src/main/java/org/springframework/test/util/XpathExpectationsHelper.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -138,7 +138,7 @@ public class XpathExpectationsHelper {
 	 * given Hamcrest matcher.
 	 * @throws Exception if content parsing or expression evaluation fails
 	 */
-	public void assertNodeCount(byte[] content, @Nullable String encoding, Matcher<Integer> matcher)
+	public void assertNodeCount(byte[] content, @Nullable String encoding, Matcher<? super Integer> matcher)
 			throws Exception {
 
 		NodeList nodeList = evaluateXpath(content, encoding, NodeList.class);
diff --git a/spring-test/src/main/java/org/springframework/test/web/client/match/JsonPathRequestMatchers.java b/spring-test/src/main/java/org/springframework/test/web/client/match/JsonPathRequestMatchers.java
index 78b2d21dbe..55050cdc9a 100644
--- a/spring-test/src/main/java/org/springframework/test/web/client/match/JsonPathRequestMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/client/match/JsonPathRequestMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -61,7 +61,7 @@ public class JsonPathRequestMatchers {
 	 * Evaluate the JSON path expression against the request content and
 	 * assert the resulting value with the given Hamcrest {@link Matcher}.
 	 */
-	public <T> RequestMatcher value(Matcher<T> matcher) {
+	public <T> RequestMatcher value(Matcher<? super T> matcher) {
 		return new AbstractJsonPathRequestMatcher() {
 			@Override
 			protected void matchInternal(MockClientHttpRequest request) throws IOException, ParseException {
@@ -78,7 +78,7 @@ public class JsonPathRequestMatchers {
 	 * to coerce an integer into a double.
 	 * @since 4.3.3
 	 */
-	public <T> RequestMatcher value(Matcher<T> matcher, Class<T> targetType) {
+	public <T> RequestMatcher value(Matcher<? super T> matcher, Class<T> targetType) {
 		return new AbstractJsonPathRequestMatcher() {
 			@Override
 			protected void matchInternal(MockClientHttpRequest request) throws IOException, ParseException {
diff --git a/spring-test/src/main/java/org/springframework/test/web/client/match/MockRestRequestMatchers.java b/spring-test/src/main/java/org/springframework/test/web/client/match/MockRestRequestMatchers.java
index 2f32065a90..ff3f6c27a7 100644
--- a/spring-test/src/main/java/org/springframework/test/web/client/match/MockRestRequestMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/client/match/MockRestRequestMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -73,7 +73,7 @@ public abstract class MockRestRequestMatchers {
 	 * @param matcher the String matcher for the expected URI
 	 * @return the request matcher
 	 */
-	public static RequestMatcher requestTo(Matcher<String> matcher) {
+	public static RequestMatcher requestTo(Matcher<? super String> matcher) {
 		Assert.notNull(matcher, "'matcher' must not be null");
 		return request -> assertThat("Request URI", request.getURI().toString(), matcher);
 	}
@@ -227,7 +227,7 @@ public abstract class MockRestRequestMatchers {
 	 * @param expression the JSON path expression
 	 * @param matcher a matcher for the value expected at the JSON path
 	 */
-	public static <T> RequestMatcher jsonPath(String expression, Matcher<T> matcher) {
+	public static <T> RequestMatcher jsonPath(String expression, Matcher<? super T> matcher) {
 		return new JsonPathRequestMatchers(expression).value(matcher);
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/client/match/XpathRequestMatchers.java b/spring-test/src/main/java/org/springframework/test/web/client/match/XpathRequestMatchers.java
index 6fd80b7d44..da90493f25 100644
--- a/spring-test/src/main/java/org/springframework/test/web/client/match/XpathRequestMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/client/match/XpathRequestMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -93,7 +93,7 @@ public class XpathRequestMatchers {
 	 * Apply the XPath and assert the number of nodes found with the given
 	 * {@code Matcher<Integer>}.
 	 */
-	public RequestMatcher nodeCount(Matcher<Integer> matcher) {
+	public RequestMatcher nodeCount(Matcher<? super Integer> matcher) {
 		return (XpathRequestMatcher) request ->
 				this.xpathHelper.assertNodeCount(request.getBodyAsBytes(), DEFAULT_ENCODING, matcher);
 	}
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java
index 2c3bff2494..98bf4361bc 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/DefaultWebTestClient.java
@@ -422,13 +422,13 @@ class DefaultWebTestClient implements WebTestClient {
 		}
 
 		@Override
-		public <T extends S> T value(Matcher<B> matcher) {
+		public <T extends S> T value(Matcher<? super B> matcher) {
 			this.result.assertWithDiagnostics(() -> MatcherAssert.assertThat(this.result.getResponseBody(), matcher));
 			return self();
 		}
 
 		@Override
-		public <T extends S, R> T value(Function<B, R> bodyMapper, Matcher<R> matcher) {
+		public <T extends S, R> T value(Function<B, R> bodyMapper, Matcher<? super R> matcher) {
 			this.result.assertWithDiagnostics(() -> {
 				B body = this.result.getResponseBody();
 				MatcherAssert.assertThat(bodyMapper.apply(body), matcher);
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/HeaderAssertions.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/HeaderAssertions.java
index 82813c6894..dfd8ce89c7 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/HeaderAssertions.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/HeaderAssertions.java
@@ -160,7 +160,7 @@ public class HeaderAssertions {
 	 * @param matcher the matcher to use
 	 * @since 5.3
 	 */
-	public WebTestClient.ResponseSpec values(String name, Matcher<Iterable<String>> matcher) {
+	public WebTestClient.ResponseSpec values(String name, Matcher<? super Iterable<String>> matcher) {
 		List<String> values = getHeaders().get(name);
 		this.exchangeResult.assertWithDiagnostics(() -> {
 			String message = getMessage(name);
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/JsonPathAssertions.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/JsonPathAssertions.java
index 9dd9c518cf..c0c2d861fd 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/JsonPathAssertions.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/JsonPathAssertions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -141,7 +141,7 @@ public class JsonPathAssertions {
 	 * Delegates to {@link JsonPathExpectationsHelper#assertValue(String, Matcher)}.
 	 * @since 5.1
 	 */
-	public <T> WebTestClient.BodyContentSpec value(Matcher<T> matcher) {
+	public <T> WebTestClient.BodyContentSpec value(Matcher<? super T> matcher) {
 		this.pathHelper.assertValue(this.content, matcher);
 		return this.bodySpec;
 	}
@@ -150,7 +150,7 @@ public class JsonPathAssertions {
 	 * Delegates to {@link JsonPathExpectationsHelper#assertValue(String, Matcher, Class)}.
 	 * @since 5.1
 	 */
-	public <T> WebTestClient.BodyContentSpec value(Matcher<T> matcher, Class<T> targetType) {
+	public <T> WebTestClient.BodyContentSpec value(Matcher<? super T> matcher, Class<T> targetType) {
 		this.pathHelper.assertValue(this.content, matcher, targetType);
 		return this.bodySpec;
 	}
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/StatusAssertions.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/StatusAssertions.java
index 62d0a246f4..497b5bace1 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/StatusAssertions.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/StatusAssertions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -204,7 +204,7 @@ public class StatusAssertions {
 	 * @param matcher the matcher to use
 	 * @since 5.1
 	 */
-	public WebTestClient.ResponseSpec value(Matcher<Integer> matcher) {
+	public WebTestClient.ResponseSpec value(Matcher<? super Integer> matcher) {
 		int value = this.exchangeResult.getStatus().value();
 		this.exchangeResult.assertWithDiagnostics(() -> MatcherAssert.assertThat("Response status", value, matcher));
 		return this.responseSpec;
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java
index 4018ac1acd..f2436c80d3 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/WebTestClient.java
@@ -838,14 +838,14 @@ public interface WebTestClient {
 		 * Assert the extracted body with a {@link Matcher}.
 		 * @since 5.1
 		 */
-		<T extends S> T value(Matcher<B> matcher);
+		<T extends S> T value(Matcher<? super B> matcher);
 
 		/**
 		 * Transform the extracted the body with a function, e.g. extracting a
 		 * property, and assert the mapped value with a {@link Matcher}.
 		 * @since 5.1
 		 */
-		<T extends S, R> T value(Function<B, R> bodyMapper, Matcher<R> matcher);
+		<T extends S, R> T value(Function<B, R> bodyMapper, Matcher<? super R> matcher);
 
 		/**
 		 * Assert the extracted body with a {@link Consumer}.
diff --git a/spring-test/src/main/java/org/springframework/test/web/reactive/server/XpathAssertions.java b/spring-test/src/main/java/org/springframework/test/web/reactive/server/XpathAssertions.java
index b64497fedb..742aa2d43c 100644
--- a/spring-test/src/main/java/org/springframework/test/web/reactive/server/XpathAssertions.java
+++ b/spring-test/src/main/java/org/springframework/test/web/reactive/server/XpathAssertions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -126,7 +126,7 @@ public class XpathAssertions {
 	 * Delegates to {@link XpathExpectationsHelper#assertNodeCount(byte[], String, Matcher)}.
 	 * @since 5.1
 	 */
-	public WebTestClient.BodyContentSpec nodeCount(Matcher<Integer> matcher){
+	public WebTestClient.BodyContentSpec nodeCount(Matcher<? super Integer> matcher){
 		return assertWith(() -> this.xpathHelper.assertNodeCount(getContent(), getCharset(), matcher));
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/FlashAttributeResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/FlashAttributeResultMatchers.java
index 41512061dc..b403f1d1b1 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/FlashAttributeResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/FlashAttributeResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -47,7 +47,7 @@ public class FlashAttributeResultMatchers {
 	 * Assert a flash attribute's value with the given Hamcrest {@link Matcher}.
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> ResultMatcher attribute(String name, Matcher<T> matcher) {
+	public <T> ResultMatcher attribute(String name, Matcher<? super T> matcher) {
 		return result -> assertThat("Flash attribute '" + name + "'", (T) result.getFlashMap().get(name), matcher);
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/HeaderResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/HeaderResultMatchers.java
index 9a764a07e2..9abbfd0f86 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/HeaderResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/HeaderResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -65,7 +65,7 @@ public class HeaderResultMatchers {
 	 * Iterable {@link Matcher}.
 	 * @since 4.3
 	 */
-	public ResultMatcher stringValues(String name, Matcher<Iterable<String>> matcher) {
+	public ResultMatcher stringValues(String name, Matcher<? super Iterable<String>> matcher) {
 		return result -> {
 			List<String> values = result.getResponse().getHeaders(name);
 			assertThat("Response header '" + name + "'", values, matcher);
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/JsonPathResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/JsonPathResultMatchers.java
index 869e3200dc..f2f78967bc 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/JsonPathResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/JsonPathResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -83,7 +83,7 @@ public class JsonPathResultMatchers {
 	 * @see #value(Matcher, Class)
 	 * @see #value(Object)
 	 */
-	public <T> ResultMatcher value(Matcher<T> matcher) {
+	public <T> ResultMatcher value(Matcher<? super T> matcher) {
 		return result -> this.jsonPathHelper.assertValue(getContent(result), matcher);
 	}
 
@@ -97,7 +97,7 @@ public class JsonPathResultMatchers {
 	 * @see #value(Matcher)
 	 * @see #value(Object)
 	 */
-	public <T> ResultMatcher value(Matcher<T> matcher, Class<T> targetType) {
+	public <T> ResultMatcher value(Matcher<? super T> matcher, Class<T> targetType) {
 		return result -> this.jsonPathHelper.assertValue(getContent(result), matcher, targetType);
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/MockMvcResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/MockMvcResultMatchers.java
index 2ad7fac08a..a3392535bb 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/MockMvcResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/MockMvcResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -206,7 +206,7 @@ public abstract class MockMvcResultMatchers {
 	 * @see #jsonPath(String, Object...)
 	 * @see #jsonPath(String, Matcher, Class)
 	 */
-	public static <T> ResultMatcher jsonPath(String expression, Matcher<T> matcher) {
+	public static <T> ResultMatcher jsonPath(String expression, Matcher<? super T> matcher) {
 		return new JsonPathResultMatchers(expression).value(matcher);
 	}
 
@@ -224,7 +224,7 @@ public abstract class MockMvcResultMatchers {
 	 * @see #jsonPath(String, Object...)
 	 * @see #jsonPath(String, Matcher)
 	 */
-	public static <T> ResultMatcher jsonPath(String expression, Matcher<T> matcher, Class<T> targetType) {
+	public static <T> ResultMatcher jsonPath(String expression, Matcher<? super T> matcher, Class<T> targetType) {
 		return new JsonPathResultMatchers(expression).value(matcher, targetType);
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/ModelResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/ModelResultMatchers.java
index b16712f3e5..00bf0626fe 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/ModelResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/ModelResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -57,7 +57,7 @@ public class ModelResultMatchers {
 	 * Assert a model attribute value with the given Hamcrest {@link Matcher}.
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> ResultMatcher attribute(String name, Matcher<T> matcher) {
+	public <T> ResultMatcher attribute(String name, Matcher<? super T> matcher) {
 		return result -> {
 			ModelAndView mav = getModelAndView(result);
 			assertThat("Model attribute '" + name + "'", (T) mav.getModel().get(name), matcher);
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/RequestResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/RequestResultMatchers.java
index a92569e3a3..eb1c63bf5d 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/RequestResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/RequestResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -84,7 +84,7 @@ public class RequestResultMatchers {
 	 * or {@link WebAsyncTask}.
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> ResultMatcher asyncResult(Matcher<T> matcher) {
+	public <T> ResultMatcher asyncResult(Matcher<? super T> matcher) {
 		return result -> {
 			HttpServletRequest request = result.getRequest();
 			assertAsyncStarted(request);
@@ -110,7 +110,7 @@ public class RequestResultMatchers {
 	 * Assert a request attribute value with the given Hamcrest {@link Matcher}.
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> ResultMatcher attribute(String name, Matcher<T> matcher) {
+	public <T> ResultMatcher attribute(String name, Matcher<? super T> matcher) {
 		return result -> {
 			T value = (T) result.getRequest().getAttribute(name);
 			assertThat("Request attribute '" + name + "'", value, matcher);
@@ -129,7 +129,7 @@ public class RequestResultMatchers {
 	 * Assert a session attribute value with the given Hamcrest {@link Matcher}.
 	 */
 	@SuppressWarnings("unchecked")
-	public <T> ResultMatcher sessionAttribute(String name, Matcher<T> matcher) {
+	public <T> ResultMatcher sessionAttribute(String name, Matcher<? super T> matcher) {
 		return result -> {
 			HttpSession session = result.getRequest().getSession();
 			Assert.state(session != null, "No HttpSession");
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/StatusResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/StatusResultMatchers.java
index 24a769ef88..a33eba0fa1 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/StatusResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/StatusResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -51,7 +51,7 @@ public class StatusResultMatchers {
 	 * Assert the response status code with the given Hamcrest {@link Matcher}.
 	 * Use the {@code StatusResultMatchers.isEqualTo} extension in Kotlin.
 	 */
-	public ResultMatcher is(Matcher<Integer> matcher) {
+	public ResultMatcher is(Matcher<? super Integer> matcher) {
 		return result -> assertThat("Response status", result.getResponse().getStatus(), matcher);
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/test/web/servlet/result/XpathResultMatchers.java b/spring-test/src/main/java/org/springframework/test/web/servlet/result/XpathResultMatchers.java
index e6025e1b3c..4528d2b40d 100644
--- a/spring-test/src/main/java/org/springframework/test/web/servlet/result/XpathResultMatchers.java
+++ b/spring-test/src/main/java/org/springframework/test/web/servlet/result/XpathResultMatchers.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -114,7 +114,7 @@ public class XpathResultMatchers {
 	 * Evaluate the XPath and assert the number of nodes found with the given
 	 * Hamcrest {@link Matcher}.
 	 */
-	public ResultMatcher nodeCount(Matcher<Integer> matcher) {
+	public ResultMatcher nodeCount(Matcher<? super Integer> matcher) {
 		return result -> {
 			MockHttpServletResponse response = result.getResponse();
 			this.xpathHelper.assertNodeCount(response.getContentAsByteArray(), getDefinedEncoding(response), matcher);