diff --git a/spring-context/src/test/java/org/springframework/mock/env/MockEnvironment.java b/spring-context/src/test/java/org/springframework/mock/env/MockEnvironment.java
index 9a533f5635..34cde9f634 100644
--- a/spring-context/src/test/java/org/springframework/mock/env/MockEnvironment.java
+++ b/spring-context/src/test/java/org/springframework/mock/env/MockEnvironment.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -27,7 +27,7 @@ import org.springframework.core.testfixture.env.MockPropertySource;
  * @author Chris Beams
  * @author Sam Brannen
  * @since 3.2
- * @see org.springframework.core.testfixture.env.MockPropertySource
+ * @see MockPropertySource
  */
 public class MockEnvironment extends AbstractEnvironment {
 
@@ -44,19 +44,23 @@ public class MockEnvironment extends AbstractEnvironment {
 
 	/**
 	 * Set a property on the underlying {@link MockPropertySource} for this environment.
+	 * @since 6.2.8
+	 * @see MockPropertySource#setProperty(String, Object)
 	 */
-	public void setProperty(String key, String value) {
-		this.propertySource.setProperty(key, value);
+	public void setProperty(String name, Object value) {
+		this.propertySource.setProperty(name, value);
 	}
 
 	/**
-	 * Convenient synonym for {@link #setProperty} that returns the current instance.
-	 * Useful for method chaining and fluent-style use.
+	 * Convenient synonym for {@link #setProperty(String, Object)} that returns
+	 * the current instance.
+	 * <p>Useful for method chaining and fluent-style use.
 	 * @return this {@link MockEnvironment} instance
-	 * @see MockPropertySource#withProperty
+	 * @since 6.2.8
+	 * @see MockPropertySource#withProperty(String, Object)
 	 */
-	public MockEnvironment withProperty(String key, String value) {
-		setProperty(key, value);
+	public MockEnvironment withProperty(String name, Object value) {
+		setProperty(name, value);
 		return this;
 	}
 
diff --git a/spring-core/src/testFixtures/java/org/springframework/core/testfixture/env/MockPropertySource.java b/spring-core/src/testFixtures/java/org/springframework/core/testfixture/env/MockPropertySource.java
index a4cbd1f22e..f1404079bb 100644
--- a/spring-core/src/testFixtures/java/org/springframework/core/testfixture/env/MockPropertySource.java
+++ b/spring-core/src/testFixtures/java/org/springframework/core/testfixture/env/MockPropertySource.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -26,7 +26,7 @@ import org.springframework.core.env.PropertySource;
  * a user-provided {@link Properties} object, or if omitted during construction,
  * the implementation will initialize its own.
  *
- * The {@link #setProperty} and {@link #withProperty} methods are exposed for
+ * <p>The {@link #setProperty} and {@link #withProperty} methods are exposed for
  * convenience, for example:
  * <pre class="code">
  * {@code
@@ -95,7 +95,7 @@ public class MockPropertySource extends PropertiesPropertySource {
 
 	/**
 	 * Convenient synonym for {@link #setProperty} that returns the current instance.
-	 * Useful for method chaining and fluent-style use.
+	 * <p>Useful for method chaining and fluent-style use.
 	 * @return this {@link MockPropertySource} instance
 	 */
 	public MockPropertySource withProperty(String name, Object value) {
diff --git a/spring-test/src/main/java/org/springframework/mock/env/MockEnvironment.java b/spring-test/src/main/java/org/springframework/mock/env/MockEnvironment.java
index 88072db943..26d2506409 100644
--- a/spring-test/src/main/java/org/springframework/mock/env/MockEnvironment.java
+++ b/spring-test/src/main/java/org/springframework/mock/env/MockEnvironment.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -26,7 +26,7 @@ import org.springframework.core.env.ConfigurableEnvironment;
  * @author Chris Beams
  * @author Sam Brannen
  * @since 3.2
- * @see org.springframework.mock.env.MockPropertySource
+ * @see MockPropertySource
  */
 public class MockEnvironment extends AbstractEnvironment {
 
@@ -43,19 +43,43 @@ public class MockEnvironment extends AbstractEnvironment {
 
 	/**
 	 * Set a property on the underlying {@link MockPropertySource} for this environment.
+	 * @since 6.2.8
+	 * @see MockPropertySource#setProperty(String, Object)
 	 */
-	public void setProperty(String key, String value) {
-		this.propertySource.setProperty(key, value);
+	public void setProperty(String name, Object value) {
+		this.propertySource.setProperty(name, value);
 	}
 
 	/**
-	 * Convenient synonym for {@link #setProperty} that returns the current instance.
-	 * Useful for method chaining and fluent-style use.
-	 * @return this {@link MockEnvironment} instance
-	 * @see MockPropertySource#withProperty
+	 * Set a property on the underlying {@link MockPropertySource} for this environment.
+	 * @see #setProperty(String, Object)
 	 */
-	public MockEnvironment withProperty(String key, String value) {
-		setProperty(key, value);
+	public void setProperty(String name, String value) {
+		this.propertySource.setProperty(name, value);
+	}
+
+	/**
+	 * Convenient synonym for {@link #setProperty(String, Object)} that returns
+	 * the current instance.
+	 * <p>Useful for method chaining and fluent-style use.
+	 * @return this {@link MockEnvironment} instance
+	 * @since 6.2.8
+	 * @see MockPropertySource#withProperty(String, Object)
+	 */
+	public MockEnvironment withProperty(String name, Object value) {
+		setProperty(name, value);
+		return this;
+	}
+
+	/**
+	 * Convenient synonym for {@link #setProperty(String, String)} that returns
+	 * the current instance.
+	 * <p>Useful for method chaining and fluent-style use.
+	 * @return this {@link MockEnvironment} instance
+	 * @see #withProperty(String, Object)
+	 */
+	public MockEnvironment withProperty(String name, String value) {
+		setProperty(name, value);
 		return this;
 	}
 
diff --git a/spring-test/src/main/java/org/springframework/mock/env/MockPropertySource.java b/spring-test/src/main/java/org/springframework/mock/env/MockPropertySource.java
index 3ef180fcf2..8b2c6e1d77 100644
--- a/spring-test/src/main/java/org/springframework/mock/env/MockPropertySource.java
+++ b/spring-test/src/main/java/org/springframework/mock/env/MockPropertySource.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -26,7 +26,7 @@ import org.springframework.core.env.PropertySource;
  * a user-provided {@link Properties} object, or if omitted during construction,
  * the implementation will initialize its own.
  *
- * The {@link #setProperty} and {@link #withProperty} methods are exposed for
+ * <p>The {@link #setProperty} and {@link #withProperty} methods are exposed for
  * convenience, for example:
  * <pre class="code">
  * {@code
@@ -36,7 +36,7 @@ import org.springframework.core.env.PropertySource;
  *
  * @author Chris Beams
  * @since 3.1
- * @see org.springframework.mock.env.MockEnvironment
+ * @see MockEnvironment
  */
 public class MockPropertySource extends PropertiesPropertySource {
 
@@ -95,7 +95,7 @@ public class MockPropertySource extends PropertiesPropertySource {
 
 	/**
 	 * Convenient synonym for {@link #setProperty} that returns the current instance.
-	 * Useful for method chaining and fluent-style use.
+	 * <p>Useful for method chaining and fluent-style use.
 	 * @return this {@link MockPropertySource} instance
 	 */
 	public MockPropertySource withProperty(String name, Object value) {