diff --git a/jcl-over-slf4j/src/main/java9/module-info.java b/jcl-over-slf4j/src/main/java/module-info.java
similarity index 100%
rename from jcl-over-slf4j/src/main/java9/module-info.java
rename to jcl-over-slf4j/src/main/java/module-info.java
diff --git a/jul-to-slf4j/src/main/java9/module-info.java b/jul-to-slf4j/src/main/java/module-info.java
similarity index 100%
rename from jul-to-slf4j/src/main/java9/module-info.java
rename to jul-to-slf4j/src/main/java/module-info.java
diff --git a/log4j-over-slf4j/src/main/java9/module-info.java b/log4j-over-slf4j/src/main/java/module-info.java
similarity index 100%
rename from log4j-over-slf4j/src/main/java9/module-info.java
rename to log4j-over-slf4j/src/main/java/module-info.java
diff --git a/parent/pom.xml b/parent/pom.xml
index 491f2a1f0..fdfc71004 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -30,7 +30,7 @@
     <project.build.outputTimestamp>2023-12-18T13:21:30Z</project.build.outputTimestamp>
     <latest.1.version>1.7.36</latest.1.version>
     <!-- java.util.ServiceLoader requires Java 6 -->
-    <jdk.version>8</jdk.version>
+    <jdk.version>11</jdk.version>
     <maven.compiler.source>${jdk.version}</maven.compiler.source>
     <maven.compiler.target>${jdk.version}</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -144,28 +144,9 @@
               <goal>compile</goal>
             </goals>
             <configuration>
-              <source>${jdk.version}</source>
-              <target>${jdk.version}</target>
+              <release>${jdk.version}</release>
             </configuration>
           </execution> 
-
-          <execution>                      
-            <id>module-compile</id>
-            <phase>compile</phase>
-            <goals>
-              <goal>compile</goal>
-            </goals>          
-            <configuration>
-              <release>9</release>
-              <compileSourceRoots>
-                <compileSourceRoot>${project.basedir}/src/main/java9</compileSourceRoot>
-              </compileSourceRoots>
-              <multiReleaseOutput>true</multiReleaseOutput>
-            </configuration>
-          </execution>
-
-
-
         </executions>
 
       </plugin>
diff --git a/slf4j-api/src/main/java9/module-info.java b/slf4j-api/src/main/java/module-info.java
old mode 100755
new mode 100644
similarity index 100%
rename from slf4j-api/src/main/java9/module-info.java
rename to slf4j-api/src/main/java/module-info.java
diff --git a/slf4j-jdk14/src/main/java9/module-info.java b/slf4j-jdk14/src/main/java/module-info.java
old mode 100755
new mode 100644
similarity index 100%
rename from slf4j-jdk14/src/main/java9/module-info.java
rename to slf4j-jdk14/src/main/java/module-info.java
diff --git a/slf4j-nop/src/main/java9/module-info.java b/slf4j-nop/src/main/java/module-info.java
similarity index 100%
rename from slf4j-nop/src/main/java9/module-info.java
rename to slf4j-nop/src/main/java/module-info.java
diff --git a/slf4j-simple/src/main/java9/module-info.java b/slf4j-simple/src/main/java/module-info.java
similarity index 100%
rename from slf4j-simple/src/main/java9/module-info.java
rename to slf4j-simple/src/main/java/module-info.java