diff --git a/org.eclipse.jdt.debug.tests/META-INF/MANIFEST.MF b/org.eclipse.jdt.debug.tests/META-INF/MANIFEST.MF
index 11e6c3281a..3dbb3bb7f8 100644
--- a/org.eclipse.jdt.debug.tests/META-INF/MANIFEST.MF
+++ b/org.eclipse.jdt.debug.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.jdt.debug.tests; singleton:=true
-Bundle-Version: 3.12.800.qualifier
+Bundle-Version: 3.12.900.qualifier
 Bundle-ClassPath: javadebugtests.jar
 Bundle-Activator: org.eclipse.jdt.debug.testplugin.JavaTestPlugin
 Bundle-Vendor: %providerName
diff --git a/org.eclipse.jdt.debug.tests/pom.xml b/org.eclipse.jdt.debug.tests/pom.xml
index f3c02defe1..cc0f0a2866 100644
--- a/org.eclipse.jdt.debug.tests/pom.xml
+++ b/org.eclipse.jdt.debug.tests/pom.xml
@@ -18,7 +18,7 @@
   </parent>
   <groupId>org.eclipse.jdt</groupId>
   <artifactId>org.eclipse.jdt.debug.tests</artifactId>
-  <version>3.12.800-SNAPSHOT</version>
+  <version>3.12.900-SNAPSHOT</version>
   <packaging>eclipse-test-plugin</packaging>
   <properties>
     <testSuite>${project.artifactId}</testSuite>
diff --git a/org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/launching/LongClassPathTests.java b/org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/launching/LongClassPathTests.java
index 78db41a911..2bd6ca7e07 100644
--- a/org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/launching/LongClassPathTests.java
+++ b/org.eclipse.jdt.debug.tests/tests/org/eclipse/jdt/debug/tests/launching/LongClassPathTests.java
@@ -104,6 +104,9 @@ protected void tearDown() throws Exception {
 	 * When classpathOnlyJar is enabled, a classpath-only jar is created.
 	 */
 	public void testVeryLongClasspathWithClasspathOnlyJar() throws Exception {
+		if (Platform.OS.isMac()) { // see https://github.com/eclipse-jdt/eclipse.jdt.debug/issues/782
+			return;
+		}
 		// Given
 		javaProject = createJavaProjectClone("test ä VeryLongClasspathWithClasspathOnlyJar", CLASSPATH_PROJECT_CONTENT_PATH.toString(), JavaProjectHelper.JAVA_SE_1_6_EE_NAME, true);
 		launchConfiguration = createLaunchConfigurationStopInMain(javaProject, MAIN_TYPE_NAME);
@@ -137,6 +140,9 @@ public void testVeryLongClasspathWithClasspathOnlyJar() throws Exception {
 	 * When JVM > 9, an argument file for the classpath is created when classpath is too long
 	 */
 	public void testVeryLongClasspathWithArgumentFile() throws Exception {
+		if (Platform.OS.isMac()) { // see https://github.com/eclipse-jdt/eclipse.jdt.debug/issues/782
+			return;
+		}
 		javaProject = createJavaProjectClone("testVeryLongClasspathWithArgumentFile", CLASSPATH_PROJECT_CONTENT_PATH.toString(), JavaProjectHelper.JAVA_SE_9_EE_NAME, true);
 		launchConfiguration = createLaunchConfigurationStopInMain(javaProject, MAIN_TYPE_NAME);
 		assumeTrue(isArgumentFileSupported(launchConfiguration));