diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 25a575b590a..c9f849770b6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,6 +25,9 @@ jobs:
             toolchain: true
           - version: 24
             toolchain: false
+          - version: 25
+            early-access: true
+            toolchain: true
         exclude:
           - os:
               name: Linux
diff --git a/build-plugin/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/junit/GradleMultiDslExtension.java b/build-plugin/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/junit/GradleMultiDslExtension.java
index 6cc25c1b218..3904db7277e 100644
--- a/build-plugin/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/junit/GradleMultiDslExtension.java
+++ b/build-plugin/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/junit/GradleMultiDslExtension.java
@@ -31,6 +31,7 @@ import org.springframework.boot.testsupport.BuildOutput;
 import org.springframework.boot.testsupport.gradle.testkit.Dsl;
 import org.springframework.boot.testsupport.gradle.testkit.GradleBuild;
 import org.springframework.boot.testsupport.gradle.testkit.GradleBuildExtension;
+import org.springframework.boot.testsupport.gradle.testkit.GradleVersions;
 
 /**
  * {@link Extension} that runs {@link TestTemplate templated tests} against the Groovy and
@@ -65,7 +66,11 @@ public class GradleMultiDslExtension implements TestTemplateInvocationContextPro
 
 		@Override
 		public List<Extension> getAdditionalExtensions() {
-			GradleBuild gradleBuild = new PluginClasspathGradleBuild(this.buildOutput, this.dsl);
+			PluginClasspathGradleBuild gradleBuild = new PluginClasspathGradleBuild(this.buildOutput, this.dsl);
+			if (this.dsl == Dsl.KOTLIN) {
+				gradleBuild.kotlin();
+			}
+			gradleBuild.gradleVersion(GradleVersions.minimumCompatible());
 			return Arrays.asList(new GradleBuildFieldSetter(gradleBuild), new GradleBuildExtension());
 		}
 
diff --git a/module/spring-boot-web-server/src/test/java/org/springframework/boot/web/server/servlet/StaticResourceJarsTests.java b/module/spring-boot-web-server/src/test/java/org/springframework/boot/web/server/servlet/StaticResourceJarsTests.java
index daef3ac2f56..c1eaac8f298 100644
--- a/module/spring-boot-web-server/src/test/java/org/springframework/boot/web/server/servlet/StaticResourceJarsTests.java
+++ b/module/spring-boot-web-server/src/test/java/org/springframework/boot/web/server/servlet/StaticResourceJarsTests.java
@@ -29,6 +29,8 @@ import java.util.jar.JarEntry;
 import java.util.jar.JarOutputStream;
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledForJreRange;
+import org.junit.jupiter.api.condition.JRE;
 import org.junit.jupiter.api.io.TempDir;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -75,6 +77,7 @@ class StaticResourceJarsTests {
 	}
 
 	@Test
+	@DisabledForJreRange(min = JRE.JAVA_25) // Requires -Djdk.net.file.ftpfallback=true
 	void uncPathsAreTolerated() throws Exception {
 		File jarFile = createResourcesJar("test-resources.jar");
 		List<URL> staticResourceJarUrls = new StaticResourceJars().getUrlsFrom(jarFile.toURI().toURL(),
diff --git a/test-support/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java b/test-support/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java
index e45cab2423b..03b1c18c977 100644
--- a/test-support/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java
+++ b/test-support/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java
@@ -33,6 +33,9 @@ public final class GradleVersions {
 	}
 
 	public static List<String> allCompatible() {
+		if (isJavaVersion(JavaVersion.VERSION_25)) {
+			return Arrays.asList("9.0.0", "9.1.0-rc-1");
+		}
 		return Arrays.asList(GradleVersion.current().getVersion(), "9.0.0", "9.1.0-rc-1");
 	}