diff --git a/buildSrc/src/test/java/org/springframework/boot/build/ConventionsPluginTests.java b/buildSrc/src/test/java/org/springframework/boot/build/ConventionsPluginTests.java
index d4f084e248d..63df2376612 100644
--- a/buildSrc/src/test/java/org/springframework/boot/build/ConventionsPluginTests.java
+++ b/buildSrc/src/test/java/org/springframework/boot/build/ConventionsPluginTests.java
@@ -77,7 +77,9 @@ class ConventionsPluginTests {
 			out.println("    id 'org.springframework.boot.conventions'");
 			out.println("}");
 			out.println("version = '1.2.3'");
-			out.println("sourceCompatibility = '17'");
+			out.println("java {");
+			out.println("    sourceCompatibility = '17'");
+			out.println("}");
 			out.println("description 'Test project for manifest customization'");
 			out.println("jar.archiveFileName = 'test.jar'");
 		}
@@ -107,7 +109,9 @@ class ConventionsPluginTests {
 			out.println("    id 'org.springframework.boot.conventions'");
 			out.println("}");
 			out.println("version = '1.2.3'");
-			out.println("sourceCompatibility = '17'");
+			out.println("java {");
+			out.println("    sourceCompatibility = '17'");
+			out.println("}");
 			out.println("description 'Test'");
 		}
 		runGradle("assemble");
@@ -136,7 +140,9 @@ class ConventionsPluginTests {
 			out.println("    id 'org.springframework.boot.conventions'");
 			out.println("}");
 			out.println("version = '1.2.3'");
-			out.println("sourceCompatibility = '17'");
+			out.println("java {");
+			out.println("    sourceCompatibility = '17'");
+			out.println("}");
 			out.println("description 'Test'");
 		}
 		runGradle("assemble");
diff --git a/documentation/spring-boot-docs/src/docs/antora/modules/tutorial/pages/first-application/index.adoc b/documentation/spring-boot-docs/src/docs/antora/modules/tutorial/pages/first-application/index.adoc
index 4672aa25dcf..153ee420f89 100644
--- a/documentation/spring-boot-docs/src/docs/antora/modules/tutorial/pages/first-application/index.adoc
+++ b/documentation/spring-boot-docs/src/docs/antora/modules/tutorial/pages/first-application/index.adoc
@@ -180,7 +180,10 @@ apply plugin: 'io.spring.dependency-management'
 
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '17'
+
+java {
+	sourceCompatibility = '17'
+}
 
 repositories {
 	mavenCentral()