diff --git a/plexus-compilers/plexus-compiler-eclipse/pom.xml b/plexus-compilers/plexus-compiler-eclipse/pom.xml
index e2d1d344..90e32eff 100644
--- a/plexus-compilers/plexus-compiler-eclipse/pom.xml
+++ b/plexus-compilers/plexus-compiler-eclipse/pom.xml
@@ -25,7 +25,7 @@
     <dependency>
       <groupId>org.eclipse.jdt</groupId>
       <artifactId>ecj</artifactId>
-      <version>3.38.0</version>
+      <version>3.40.0</version>
     </dependency>
     <dependency>
       <groupId>javax.inject</groupId>
diff --git a/plexus-compilers/plexus-compiler-eclipse/src/main/java/org/codehaus/plexus/compiler/eclipse/EclipseJavaCompiler.java b/plexus-compilers/plexus-compiler-eclipse/src/main/java/org/codehaus/plexus/compiler/eclipse/EclipseJavaCompiler.java
index f14db674..3c7f4f4c 100644
--- a/plexus-compilers/plexus-compiler-eclipse/src/main/java/org/codehaus/plexus/compiler/eclipse/EclipseJavaCompiler.java
+++ b/plexus-compilers/plexus-compiler-eclipse/src/main/java/org/codehaus/plexus/compiler/eclipse/EclipseJavaCompiler.java
@@ -234,11 +234,11 @@ public CompilerResult performCompile(CompilerConfiguration config) throws Compil
                 getLog().debug("Using JSR-199 EclipseCompiler");
                 // ECJ JSR-199 compiles against the latest Java version it supports if no source
                 // version is given explicitly. BatchCompiler uses 1.3 as default. So check
-                // whether a source version is specified, and if not supply 1.3 explicitly.
+                // whether a source version is specified, and if not supply 8 explicitly.
                 if (!haveSourceOrReleaseArgument(args)) {
-                    getLog().debug("ecj: no source level nor release specified, defaulting to Java 1.3");
+                    getLog().debug("ecj: no source level nor release specified, defaulting to Java 8");
                     args.add("-source");
-                    args.add("1.3");
+                    args.add("8");
                 }
 
                 // Also check for the encoding. Could have been set via the CompilerConfig
diff --git a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerErrorsAsWarningsTest.java b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerErrorsAsWarningsTest.java
index 91580922..75c5279a 100644
--- a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerErrorsAsWarningsTest.java
+++ b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerErrorsAsWarningsTest.java
@@ -36,15 +36,21 @@ protected int expectedWarnings() {
 
     @Override
     protected Collection<String> expectedOutputFiles() {
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")
+                || javaVersion.contains("11")
+                || javaVersion.contains("17")
+                || javaVersion.contains("21")
+                || javaVersion.contains("23")) {
+            return Arrays.asList(
+                    "org/codehaus/foo/Deprecation.class",
+                    "org/codehaus/foo/ExternalDeps.class",
+                    "org/codehaus/foo/Person.class");
+        }
         return Arrays.asList(
                 "org/codehaus/foo/Deprecation.class",
                 "org/codehaus/foo/ExternalDeps.class",
                 "org/codehaus/foo/Person.class",
-                "org/codehaus/foo/ReservedWord.class"
-                // "org/codehaus/foo/Bad.class",             // This one has no class file generated as it's one big
-                // issue
-                // "org/codehaus/foo/UnknownSymbol.class",
-                // "org/codehaus/foo/RightClassname.class"
-                );
+                "org/codehaus/foo/ReservedWord.class");
     }
 }
diff --git a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerFailOnWarningsTest.java b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerFailOnWarningsTest.java
index c5a94b3d..bf87e8e8 100644
--- a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerFailOnWarningsTest.java
+++ b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerFailOnWarningsTest.java
@@ -19,16 +19,27 @@ protected String getRoleHint() {
 
     @Override
     protected int expectedErrors() {
-        return 6;
+        return 5;
     }
 
     @Override
     protected int expectedWarnings() {
-        return 1;
+        return 0;
     }
 
     @Override
     protected Collection<String> expectedOutputFiles() {
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")
+                || javaVersion.contains("11")
+                || javaVersion.contains("17")
+                || javaVersion.contains("21")
+                || javaVersion.contains("23")) {
+            return Arrays.asList(
+                    "org/codehaus/foo/Deprecation.class",
+                    "org/codehaus/foo/ExternalDeps.class",
+                    "org/codehaus/foo/Person.class");
+        }
         return Arrays.asList(
                 "org/codehaus/foo/Deprecation.class",
                 "org/codehaus/foo/ExternalDeps.class",
diff --git a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerTest.java b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerTest.java
index de72e6b4..042bddb2 100644
--- a/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerTest.java
+++ b/plexus-compilers/plexus-compiler-eclipse/src/test/java/org/codehaus/plexus/compiler/eclipse/EclipseCompilerTest.java
@@ -53,16 +53,27 @@ protected String getRoleHint() {
 
     @Override
     protected int expectedErrors() {
-        return 4;
+        return 5;
     }
 
     @Override
     protected int expectedWarnings() {
-        return 2;
+        return 1;
     }
 
     @Override
     protected Collection<String> expectedOutputFiles() {
+        String javaVersion = getJavaVersion();
+        if (javaVersion.contains("9.0")
+                || javaVersion.contains("11")
+                || javaVersion.contains("17")
+                || javaVersion.contains("21")
+                || javaVersion.contains("23")) {
+            return Arrays.asList(
+                    "org/codehaus/foo/Deprecation.class",
+                    "org/codehaus/foo/ExternalDeps.class",
+                    "org/codehaus/foo/Person.class");
+        }
         return Arrays.asList(
                 "org/codehaus/foo/Deprecation.class",
                 "org/codehaus/foo/ExternalDeps.class",