diff --git a/core/spring-boot/src/main/java/org/springframework/boot/system/JavaVersion.java b/core/spring-boot/src/main/java/org/springframework/boot/system/JavaVersion.java
index 0f493b49a06..a2b0b9baccc 100644
--- a/core/spring-boot/src/main/java/org/springframework/boot/system/JavaVersion.java
+++ b/core/spring-boot/src/main/java/org/springframework/boot/system/JavaVersion.java
@@ -94,7 +94,13 @@ public enum JavaVersion {
 	 * Java 25.
 	 * @since 3.5.7
 	 */
-	TWENTY_FIVE("25", Reader.class, "readAllLines");
+	TWENTY_FIVE("25", Reader.class, "readAllLines"),
+
+	/**
+	 * Java 26.
+	 * @since 4.0.3
+	 */
+	TWENTY_SIX("26", String.class, "equalsFoldCase", String.class);
 
 	private final String name;
 
diff --git a/core/spring-boot/src/test/java/org/springframework/boot/system/JavaVersionTests.java b/core/spring-boot/src/test/java/org/springframework/boot/system/JavaVersionTests.java
index 2d4a3350ac2..1d8251b393e 100644
--- a/core/spring-boot/src/test/java/org/springframework/boot/system/JavaVersionTests.java
+++ b/core/spring-boot/src/test/java/org/springframework/boot/system/JavaVersionTests.java
@@ -133,4 +133,10 @@ class JavaVersionTests {
 		assertThat(JavaVersion.getJavaVersion()).isEqualTo(JavaVersion.TWENTY_FIVE);
 	}
 
+	@Test
+	@EnabledOnJre(JRE.JAVA_26)
+	void currentJavaVersionTwentySix() {
+		assertThat(JavaVersion.getJavaVersion()).isEqualTo(JavaVersion.TWENTY_SIX);
+	}
+
 }