diff --git a/documentation/documentation.gradle b/documentation/documentation.gradle
index 244a176ee1..69e3d20e69 100644
--- a/documentation/documentation.gradle
+++ b/documentation/documentation.gradle
@@ -85,6 +85,31 @@ dependencies {
 			testRuntime( libraries.mssql )
 		}
 	}
+
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Java 9 ftw!
+	if ( JavaVersion.current().isJava9Compatible() ) {
+		// The JDK used to run Gradle is Java 9+, and we assume that that is the same
+		//		JDK for executing tasks
+		compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		compile( 'javax:javaee-api:7.0' )
+
+		testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		testCompile( 'javax:javaee-api:7.0' )
+
+		testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		testRuntime( 'javax:javaee-api:7.0' )
+	}
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 processTestResources.doLast( {
diff --git a/hibernate-c3p0/hibernate-c3p0.gradle b/hibernate-c3p0/hibernate-c3p0.gradle
index d260fd0c89..c7a387d547 100644
--- a/hibernate-c3p0/hibernate-c3p0.gradle
+++ b/hibernate-c3p0/hibernate-c3p0.gradle
@@ -17,6 +17,31 @@ dependencies {
     // EL libraries are provided scope in Validator
     testRuntime( libraries.expression_language_api )
     testRuntime( libraries.expression_language_impl )
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        compile( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
diff --git a/hibernate-ehcache/hibernate-ehcache.gradle b/hibernate-ehcache/hibernate-ehcache.gradle
index 572af6c397..f0a4a1e293 100644
--- a/hibernate-ehcache/hibernate-ehcache.gradle
+++ b/hibernate-ehcache/hibernate-ehcache.gradle
@@ -9,6 +9,32 @@ dependencies {
     compile( libraries.ehcache )
 
     testCompile project( ':hibernate-testing' )
+
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        provided( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        provided( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        provided( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        provided( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        provided( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
diff --git a/hibernate-envers/hibernate-envers.gradle b/hibernate-envers/hibernate-envers.gradle
index 2a6701ba31..62f35318d2 100644
--- a/hibernate-envers/hibernate-envers.gradle
+++ b/hibernate-envers/hibernate-envers.gradle
@@ -16,6 +16,31 @@ dependencies {
     testCompile( project( ':hibernate-testing' ) )
     testCompile( project( path: ':hibernate-core', configuration: 'tests' ) )
     testRuntime( libraries.javassist )
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        provided( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        provided( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        provided( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        provided( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        provided( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
diff --git a/hibernate-hikaricp/hibernate-hikaricp.gradle b/hibernate-hikaricp/hibernate-hikaricp.gradle
index 08b15f3ebb..101cc2c13b 100644
--- a/hibernate-hikaricp/hibernate-hikaricp.gradle
+++ b/hibernate-hikaricp/hibernate-hikaricp.gradle
@@ -8,6 +8,31 @@ dependencies {
     compile project( ':hibernate-core' )
     compile( libraries.hikaricp )
     testCompile project( ':hibernate-testing' )
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        compile( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
@@ -18,3 +43,8 @@ mavenPom {
 def osgiDescription() {
 	return mavenPom.description
 }
+
+if ( JavaVersion.current().isJava9Compatible() ) {
+    // Hikari CP relies on Javassist which we know has issues with Java 9
+    test.enabled = false
+}
diff --git a/hibernate-infinispan/hibernate-infinispan.gradle b/hibernate-infinispan/hibernate-infinispan.gradle
index 6966e312bb..353e2c0f86 100644
--- a/hibernate-infinispan/hibernate-infinispan.gradle
+++ b/hibernate-infinispan/hibernate-infinispan.gradle
@@ -26,6 +26,31 @@ dependencies {
     testCompile( libraries.jnp_server )
     testCompile( libraries.mockito )
     testCompile ('mysql:mysql-connector-java:5.1.17')
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        compile( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
diff --git a/hibernate-jcache/hibernate-jcache.gradle b/hibernate-jcache/hibernate-jcache.gradle
index 1c60b311e6..bb775d2722 100644
--- a/hibernate-jcache/hibernate-jcache.gradle
+++ b/hibernate-jcache/hibernate-jcache.gradle
@@ -5,6 +5,31 @@ dependencies {
     testCompile project( ':hibernate-testing' )
     testCompile( libraries.mockito )
     testRuntime( libraries.ehcache3 )
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        compile( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
diff --git a/hibernate-osgi/hibernate-osgi.gradle b/hibernate-osgi/hibernate-osgi.gradle
index 0bc8929adc..f5c1e774a3 100644
--- a/hibernate-osgi/hibernate-osgi.gradle
+++ b/hibernate-osgi/hibernate-osgi.gradle
@@ -63,6 +63,31 @@ dependencies {
 	}
 
 	karafDistro "org.apache.karaf:apache-karaf:${karafVersion}@tar.gz"
+
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Java 9 ftw!
+	if ( JavaVersion.current().isJava9Compatible() ) {
+		// The JDK used to run Gradle is Java 9+, and we assume that that is the same
+		//		JDK for executing tasks
+		compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		compile( 'javax:javaee-api:7.0' )
+
+		testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		testCompile( 'javax:javaee-api:7.0' )
+
+		testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+		testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+		testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+		testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+		testRuntime( 'javax:javaee-api:7.0' )
+	}
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 mavenPom {
@@ -373,4 +398,9 @@ publishing {
 			}
 		}
 	}
+}
+
+if ( JavaVersion.current().isJava9Compatible() ) {
+	// Hikari CP relies on Javassist which we know has issues with Java 9
+	test.enabled = false
 }
\ No newline at end of file
diff --git a/hibernate-spatial/hibernate-spatial.gradle b/hibernate-spatial/hibernate-spatial.gradle
index e7b9362335..422ff6b7a0 100644
--- a/hibernate-spatial/hibernate-spatial.gradle
+++ b/hibernate-spatial/hibernate-spatial.gradle
@@ -54,6 +54,31 @@ dependencies {
     testRuntime('jaxen:jaxen:1.1')
     testRuntime(libraries.javassist)
 
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // Java 9 ftw!
+    if ( JavaVersion.current().isJava9Compatible() ) {
+        // The JDK used to run Gradle is Java 9+, and we assume that that is the same
+        //		JDK for executing tasks
+        compile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        compile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        compile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        compile( 'javax:javaee-api:7.0' )
+
+        testCompile( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testCompile( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testCompile( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testCompile( 'javax:javaee-api:7.0' )
+
+        testRuntime( 'com.sun.xml.bind:jaxb-impl:2.2.11' )
+        testRuntime( 'org.glassfish.jaxb:jaxb-xjc:2.2.11' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics:0.11.0' )
+        testRuntime( 'org.jvnet.jaxb2_commons:jaxb2-basics-ant:0.11.0' )
+        testRuntime( 'javax:javaee-api:7.0' )
+    }
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 }
 
 sourceSets.test.resources {