diff --git a/picocli-tests-java8plus/src/test/java/picocli/AutoCompleteSystemExitTest.java b/picocli-tests-java8plus/src/test/java/picocli/AutoCompleteSystemExitTest.java
index ac52baba8..1c8e612b5 100644
--- a/picocli-tests-java8plus/src/test/java/picocli/AutoCompleteSystemExitTest.java
+++ b/picocli-tests-java8plus/src/test/java/picocli/AutoCompleteSystemExitTest.java
@@ -2,6 +2,8 @@
 
 
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledForJreRange;
+import org.junit.jupiter.api.condition.JRE;
 
 import java.io.File;
 import java.io.FileInputStream;
@@ -507,6 +509,7 @@ private String expectedCompletionScriptForNonDefault() {
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppHelp() throws Exception {
         String[][] argsList = new String[][] {
             {"-h"},
@@ -544,6 +547,7 @@ public void testAutoCompleteAppHelp_NoSystemExit() throws Exception {
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteRequiresCommandLineFQCN() throws Exception {
         int statusCode = catchSystemExit(() -> {
             restoreSystemProperties(() -> {
@@ -568,6 +572,7 @@ public void testAutoCompleteRequiresCommandLineFQCN_NoSystemExit() throws Except
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppCannotInstantiate() throws Exception {
         @CommandLine.Command(name = "test")
         class TestApp {
@@ -602,6 +607,7 @@ class TestApp {
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppCompletionScriptFileWillNotOverwrite() throws Exception {
         File dir = new File(System.getProperty("java.io.tmpdir"));
         final File completionScript = new File(dir, "App_completion");
@@ -650,6 +656,7 @@ public void testAutoCompleteAppCompletionScriptFileWillNotOverwrite_NoSystemExit
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppCommandScriptFileWillNotOverwrite() throws Exception {
         File dir = new File(System.getProperty("java.io.tmpdir"));
         final File commandScript = new File(dir, "picocli.AutoComplete");
@@ -702,6 +709,7 @@ public void testAutoCompleteAppCommandScriptFileWillNotOverwrite_NoSystemExit()
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppCommandScriptFileWillOverwriteIfRequested() throws Exception {
         File dir = new File(System.getProperty("java.io.tmpdir"));
         final File commandScript = new File(dir, "picocli.AutoComplete");
@@ -731,6 +739,7 @@ public void testAutoCompleteAppCommandScriptFileWillOverwriteIfRequested() throw
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppBothScriptFilesForceOverwrite() throws Exception {
         File dir = new File(System.getProperty("java.io.tmpdir"));
         final File commandScript = new File(dir, "picocli.AutoComplete");
@@ -816,6 +825,7 @@ public void testAutoCompleteAppBothScriptFilesForceOverwrite_NoSystemExit() thro
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppGeneratesScriptNameBasedOnCommandName() throws Exception {
 
         final String commandName = "bestCommandEver";
@@ -871,6 +881,7 @@ public <K> K create(Class<K> cls) {
     }
 
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void testAutoCompleteAppUsesCustomFactory() throws Exception {
 
         final String commandName = "nondefault";
@@ -902,6 +913,7 @@ public void testAutoCompleteAppUsesCustomFactory() throws Exception {
     private static class PrivateCommandClass { }
     //Support generating autocompletion scripts for non-public @Command classes #306
     @Test
+    @DisabledForJreRange(min = JRE.JAVA_18, max = JRE.JAVA_21, disabledReason = "UnsupportedOperationException in SystemLambda.withSecurityManager")
     public void test306_SupportGeneratingAutocompletionScriptForNonPublicCommandClasses() throws Exception {
         File dir = new File(System.getProperty("java.io.tmpdir"));
         final File completionScript = new File(dir, "App_completion");