diff --git a/spring-beans/spring-beans.gradle b/spring-beans/spring-beans.gradle
index 9c4d0af79e..3c5d34179e 100644
--- a/spring-beans/spring-beans.gradle
+++ b/spring-beans/spring-beans.gradle
@@ -23,8 +23,7 @@ sourceSets {
 }
 
 compileGroovy {
-	// Groovy generates Java code with "new Boolean" usage which is deprecated on JDK 17
-	// options.compilerArgs += "-Werror"
+	options.compilerArgs += "-Werror"
 }
 
 // This module also builds Kotlin code and the compileKotlin task naturally depends on
diff --git a/spring-beans/src/main/groovy/org/springframework/beans/factory/groovy/GroovyDynamicElementReader.groovy b/spring-beans/src/main/groovy/org/springframework/beans/factory/groovy/GroovyDynamicElementReader.groovy
index d017121694..8157450773 100644
--- a/spring-beans/src/main/groovy/org/springframework/beans/factory/groovy/GroovyDynamicElementReader.groovy
+++ b/spring-beans/src/main/groovy/org/springframework/beans/factory/groovy/GroovyDynamicElementReader.groovy
@@ -40,7 +40,7 @@ class GroovyDynamicElementReader extends GroovyObjectSupport {
 
 	private final GroovyBeanDefinitionWrapper beanDefinition
 
-	protected final boolean decorating;
+	protected final Boolean decorating;
 
 	private boolean callAfterInvocation = true