diff --git a/.travis.yml b/.travis.yml
index 6158009b..61b199b2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ jdk:
 
   - oraclejdk8
   - oraclejdk9
-  - openjdk7
-  
+  - oraclejdk11
+
 script: "mvn --show-version --errors --batch-mode clean verify -DredirectTestOutputToFile=false"
 
 cache:
diff --git a/plexus-compiler-test/src/main/java/org/codehaus/plexus/compiler/AbstractCompilerTest.java b/plexus-compiler-test/src/main/java/org/codehaus/plexus/compiler/AbstractCompilerTest.java
index 9c1c9d42..50da0b4b 100644
--- a/plexus-compiler-test/src/main/java/org/codehaus/plexus/compiler/AbstractCompilerTest.java
+++ b/plexus-compiler-test/src/main/java/org/codehaus/plexus/compiler/AbstractCompilerTest.java
@@ -115,9 +115,12 @@ public void testCompilingSources()
 
         int numCompilerWarnings = messages.size() - numCompilerErrors;
 
-        if ( expectedErrors() != numCompilerErrors )
+        int expectedErrors = expectedErrors();
+
+        if ( expectedErrors != numCompilerErrors )
         {
             System.out.println( numCompilerErrors + " error(s) found:" );
+            List<String> errors = new ArrayList<>();
             for ( CompilerMessage error : messages )
             {
                 if ( !error.isError() )
@@ -129,13 +132,17 @@ public void testCompilingSources()
                 System.out.println( error.getFile() );
                 System.out.println( error.getMessage() );
                 System.out.println( "----" );
+                errors.add( error.getMessage() );
             }
 
-            assertEquals( "Wrong number of compilation errors: " + messages, expectedErrors(), numCompilerErrors );
+            assertEquals( "Wrong number of compilation errors (" + numCompilerErrors + "/" + expectedErrors //
+                              + ") : " + errors, expectedErrors, numCompilerErrors );
         }
 
-        if ( expectedWarnings() != numCompilerWarnings )
+        int expectedWarnings = expectedWarnings();
+        if ( expectedWarnings != numCompilerWarnings )
         {
+            List<String> warnings = new ArrayList<>();
             System.out.println( numCompilerWarnings + " warning(s) found:" );
             for ( CompilerMessage error : messages )
             {
@@ -148,9 +155,11 @@ public void testCompilingSources()
                 System.out.println( error.getFile() );
                 System.out.println( error.getMessage() );
                 System.out.println( "----" );
+                warnings.add( error.getMessage() );
             }
 
-            assertEquals( "Wrong number of compilation warnings.", expectedWarnings(), numCompilerWarnings );
+            assertEquals( "Wrong number (" + numCompilerWarnings + "/" + expectedWarnings + ") of compilation warnings: " + warnings, //
+                          expectedWarnings, numCompilerWarnings );
         }
 
         assertEquals( new TreeSet<>( normalizePaths( expectedOutputFiles() ) ), files );
@@ -224,7 +233,7 @@ public String getSourceVersion()
 
     private List<String> normalizePaths( Collection<String> relativePaths )
     {
-        List<String> normalizedPaths = new ArrayList<String>();
+        List<String> normalizedPaths = new ArrayList<>();
         for ( String relativePath : relativePaths )
         {
             normalizedPaths.add( relativePath.replace( File.separatorChar, '/' ) );
diff --git a/plexus-compilers/plexus-compiler-aspectj/pom.xml b/plexus-compilers/plexus-compiler-aspectj/pom.xml
index cd70f131..61bebce2 100644
--- a/plexus-compilers/plexus-compiler-aspectj/pom.xml
+++ b/plexus-compilers/plexus-compiler-aspectj/pom.xml
@@ -14,7 +14,7 @@
   <description>AspectJ Compiler support for Plexus Compiler component.</description>
 
   <properties>
-    <aspectj.version>1.8.9</aspectj.version>
+    <aspectj.version>1.9.2</aspectj.version>
   </properties>
 
   <dependencies>
diff --git a/plexus-compilers/plexus-compiler-aspectj/src/main/java/org/codehaus/plexus/compiler/ajc/AspectJCompiler.java b/plexus-compilers/plexus-compiler-aspectj/src/main/java/org/codehaus/plexus/compiler/ajc/AspectJCompiler.java
index 0371967a..c06e391d 100644
--- a/plexus-compilers/plexus-compiler-aspectj/src/main/java/org/codehaus/plexus/compiler/ajc/AspectJCompiler.java
+++ b/plexus-compilers/plexus-compiler-aspectj/src/main/java/org/codehaus/plexus/compiler/ajc/AspectJCompiler.java
@@ -503,9 +503,21 @@ private List<File> buildFileList( List<String> locations )
     private void setSourceVersion( AjBuildConfig buildConfig, String sourceVersion )
         throws CompilerException
     {
-        if ( "1.9".equals( sourceVersion ) )
+        if ( "11".equals( sourceVersion ) )
         {
-            buildConfig.getOptions().sourceLevel = ClassFileConstants.JDK1_9;
+            buildConfig.getOptions().sourceLevel = ClassFileConstants.JDK11;
+        }
+        else if ( "10".equals( sourceVersion ) )
+        {
+            buildConfig.getOptions().sourceLevel = ClassFileConstants.JDK10;
+        }
+        else if ( "9".equals( sourceVersion ) )
+        {
+            buildConfig.getOptions().sourceLevel = ClassFileConstants.JDK9;
+        }
+        else if ( "1.9".equals( sourceVersion ) )
+        {
+            buildConfig.getOptions().sourceLevel = ClassFileConstants.JDK9;
         }
         else if ( "1.8".equals( sourceVersion ) )
         {
diff --git a/plexus-compilers/plexus-compiler-aspectj/src/test/java/org/codehaus/plexus/compiler/ajc/AspectJCompilerTest.java b/plexus-compilers/plexus-compiler-aspectj/src/test/java/org/codehaus/plexus/compiler/ajc/AspectJCompilerTest.java
index b897b563..e3c9835b 100644
--- a/plexus-compilers/plexus-compiler-aspectj/src/test/java/org/codehaus/plexus/compiler/ajc/AspectJCompilerTest.java
+++ b/plexus-compilers/plexus-compiler-aspectj/src/test/java/org/codehaus/plexus/compiler/ajc/AspectJCompilerTest.java
@@ -28,7 +28,8 @@ protected int expectedErrors()
     {
         // olamy well I agree it's hackhish but I don't want to waste too much time with aspectj which is probably
         // not used a lot anymore...
-        if (getJavaVersion().startsWith( "9" ) || getJavaVersion().startsWith( "10" ))
+        String javaVersion = getJavaVersion();
+        if (javaVersion.equals( "11" ))
         {
             return 11;
         }
@@ -40,10 +41,10 @@ protected Collection<String> expectedOutputFiles()
         String javaVersion = System.getProperty( "java.version" );
         // olamy well I agree it's hackhish but I don't want to waste too much time with aspectj which is probably
         // not used a lot anymore...
-        if (javaVersion.startsWith( "9" ) || javaVersion.startsWith( "10" ))
-        {
-            return Collections.emptyList();
-        }
+//        if (javaVersion.startsWith( "9" ) || javaVersion.startsWith( "10" ))
+//        {
+//            return Collections.emptyList();
+//        }
         return Arrays.asList( new String[]{ "org/codehaus/foo/ExternalDeps.class", "org/codehaus/foo/Person.class" } );
     }
 
diff --git a/plexus-compilers/plexus-compiler-eclipse/pom.xml b/plexus-compilers/plexus-compiler-eclipse/pom.xml
index 2e1f1235..ec5f9107 100644
--- a/plexus-compilers/plexus-compiler-eclipse/pom.xml
+++ b/plexus-compilers/plexus-compiler-eclipse/pom.xml
@@ -21,7 +21,7 @@
     <dependency>
       <groupId>org.eclipse.jdt</groupId>
       <artifactId>ecj</artifactId>
-      <version>3.13.100</version>
+      <version>3.15.1</version>
     </dependency>
   </dependencies>
 
diff --git a/plexus-compilers/plexus-compiler-javac-errorprone/pom.xml b/plexus-compilers/plexus-compiler-javac-errorprone/pom.xml
index 6f737cee..dbf0b7da 100644
--- a/plexus-compilers/plexus-compiler-javac-errorprone/pom.xml
+++ b/plexus-compilers/plexus-compiler-javac-errorprone/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.errorprone</groupId>
       <artifactId>error_prone_core</artifactId>
-      <version>2.2.0</version>
+      <version>2.3.2</version>
     </dependency>
   </dependencies>
 
diff --git a/plexus-compilers/plexus-compiler-javac/src/test/java/org/codehaus/plexus/compiler/javac/AbstractJavacCompilerTest.java b/plexus-compilers/plexus-compiler-javac/src/test/java/org/codehaus/plexus/compiler/javac/AbstractJavacCompilerTest.java
index 76359d86..fdee0363 100644
--- a/plexus-compilers/plexus-compiler-javac/src/test/java/org/codehaus/plexus/compiler/javac/AbstractJavacCompilerTest.java
+++ b/plexus-compilers/plexus-compiler-javac/src/test/java/org/codehaus/plexus/compiler/javac/AbstractJavacCompilerTest.java
@@ -60,14 +60,14 @@ protected String getRoleHint()
 
     protected int expectedErrors()
     {
-
-        if (getJavaVersion().contains("9.0")){
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")||javaVersion.contains("11")){
             // lots of new warnings about obsoletions for future releases
             return 5;
         }
 
         // javac output changed for misspelled modifiers starting in 1.6...they now generate 2 errors per occurrence, not one.
-        if ( "1.5".compareTo( getJavaVersion() ) < 0 )
+        if ( "1.5".compareTo( javaVersion ) < 0 )
         {
             return 4;
         }
@@ -79,18 +79,21 @@ protected int expectedErrors()
 
     protected int expectedWarnings()
     {
-        if (getJavaVersion().contains("9.0")){
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("11")){
+            return 1;
+        }
+        if (javaVersion.contains("9.0")){
             // lots of new warnings about obsoletions for future releases
             return 8;
         }
 
-
-        if (getJavaVersion().contains("1.8")){
+        if (javaVersion.contains("1.8")){
             // lots of new warnings about obsoletions for future releases
             return 30;
         }
 
-        if ( "1.6".compareTo( getJavaVersion() ) < 0 )
+        if ( "1.6".compareTo( javaVersion ) < 0 )
         {
             // with 1.7 some warning with bootstrap class path not set in conjunction with -source 1.3
             return 9;
@@ -102,24 +105,33 @@ protected int expectedWarnings()
     @Override
     public String getTargetVersion()
     {
-        if (getJavaVersion().contains("9.0")){
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")){
             return "1.7";
         }
+        if (javaVersion.contains("11")){
+            return "11";
+        }
         return super.getTargetVersion();
     }
 
     @Override
     public String getSourceVersion()
     {
-        if (getJavaVersion().contains("9.0")){
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")){
             return "1.7";
         }
+        if (javaVersion.contains("11")){
+            return "11";
+        }
         return super.getTargetVersion();
     }
 
     protected Collection<String> expectedOutputFiles()
     {
-        if (getJavaVersion().contains("9.0")){
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")||javaVersion.contains("11")){
             return Arrays.asList( new String[]{ "org/codehaus/foo/Deprecation.class", "org/codehaus/foo/ExternalDeps.class",
                 "org/codehaus/foo/Person.class"} );
         }
@@ -142,7 +154,7 @@ public void internalTest( CompilerConfiguration compilerConfiguration, List<Stri
 
     public void testBuildCompilerArgs13()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -155,7 +167,7 @@ public void testBuildCompilerArgs13()
 
     public void testBuildCompilerArgs14()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -168,7 +180,7 @@ public void testBuildCompilerArgs14()
 
     public void testBuildCompilerArgs15()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -181,7 +193,7 @@ public void testBuildCompilerArgs15()
 
     public void testBuildCompilerArgs18()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -194,7 +206,7 @@ public void testBuildCompilerArgs18()
 
     public void testBuildCompilerArgsUnspecifiedVersion()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -205,7 +217,7 @@ public void testBuildCompilerArgsUnspecifiedVersion()
 
     public void testBuildCompilerDebugLevel()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -221,7 +233,7 @@ public void testBuildCompilerDebugLevel()
     // PLXCOMP-190
     public void testJRuntimeArguments()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -251,7 +263,7 @@ public void testJRuntimeArguments()
 
     public void testModulePath() throws Exception
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -278,7 +290,7 @@ public void testModulePath() throws Exception
 
     public void testModuleVersion()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -303,7 +315,7 @@ public void testModuleVersion()
 
     public void testReleaseVersion()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -322,7 +334,7 @@ public void testReleaseVersion()
 
     public void testFailOnWarning()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
@@ -346,7 +358,7 @@ public void testFailOnWarning()
 
     public void testMultipleAddExports()
     {
-        List<String> expectedArguments = new ArrayList<String>();
+        List<String> expectedArguments = new ArrayList<>();
 
         CompilerConfiguration compilerConfiguration = new CompilerConfiguration();
 
diff --git a/pom.xml b/pom.xml
index fdec2cc2..ea32f0ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -85,7 +85,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
-          <version>2.20</version>
+          <version>2.22.1</version>
           <configuration>
             <redirectTestOutputToFile>${redirectTestOutputToFile}</redirectTestOutputToFile>
           </configuration>
@@ -148,6 +148,29 @@
           </execution>
         </executions>
       </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>3.0.0-M2</version>
+        <executions>
+          <execution>
+            <id>enforce-java</id>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <requireJavaVersion>
+                  <version>[1.8,)</version>
+                  <message>[ERROR] OLD JDK [${java.version}] in use. This projects requires JDK 8 or newer</message>
+                </requireJavaVersion>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+
     </plugins>
   </build>