diff --git a/java-diff-utils-jgit/pom.xml b/java-diff-utils-jgit/pom.xml
index ceae44a..d22e99c 100644
--- a/java-diff-utils-jgit/pom.xml
+++ b/java-diff-utils-jgit/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>io.github.java-diff-utils</groupId>
     <artifactId>java-diff-utils-parent</artifactId>
-    <version>4.18-SNAPSHOT</version>
+    <version>4.19-SNAPSHOT</version>
   </parent>
   <artifactId>java-diff-utils-jgit</artifactId>
   <packaging>jar</packaging>
diff --git a/java-diff-utils/pom.xml b/java-diff-utils/pom.xml
index 7bedc53..fabee22 100644
--- a/java-diff-utils/pom.xml
+++ b/java-diff-utils/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>io.github.java-diff-utils</groupId>
     <artifactId>java-diff-utils-parent</artifactId>
-    <version>4.18-SNAPSHOT</version>
+    <version>4.19-SNAPSHOT</version>
   </parent>
   <groupId>io.github.java-diff-utils</groupId>
   <artifactId>java-diff-utils</artifactId>
diff --git a/java-diff-utils/src/test/java/com/github/difflib/unifieddiff/UnifiedDiffWriterTest.java b/java-diff-utils/src/test/java/com/github/difflib/unifieddiff/UnifiedDiffWriterTest.java
index 3de1d4b..a9b507d 100644
--- a/java-diff-utils/src/test/java/com/github/difflib/unifieddiff/UnifiedDiffWriterTest.java
+++ b/java-diff-utils/src/test/java/com/github/difflib/unifieddiff/UnifiedDiffWriterTest.java
@@ -102,8 +102,8 @@ public void testWriteZeroContextEmptyRange() throws IOException {
 				String[] lines = writer.toString().split("\\n");
 
 				assertEquals("@@ -2,0 +3,1 @@", lines[2]);
-    }
-  
+		}
+
 		@ParameterizedTest
 		@ValueSource(ints = {1, 2, 9, 16})
 		public void testPropagateWriterFailures(int failOnWrite) {
diff --git a/pom.xml b/pom.xml
index 5f88bff..90624ef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>io.github.java-diff-utils</groupId>
   <artifactId>java-diff-utils-parent</artifactId>
-  <version>4.18-SNAPSHOT</version>
+  <version>4.19-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>java-diff-utils-parent</name>
   <description>The DiffUtils library for computing diffs, applying patches, generationg side-by-side view in Java.</description>
@@ -132,28 +132,28 @@
           <sourceDirectories>${project.build.sourceDirectory}</sourceDirectories>
           <checkstyleRules>
             <module name="Checker">
-              <module name="SuppressWarningsFilter"/>
+              <module name="SuppressWarningsFilter" />
               <module name="TreeWalker">
-                <module name="SuppressionCommentFilter"/>
-                <module name="AvoidNestedBlocks"/>
-                <module name="ConstantName"/>
-                <module name="EmptyCatchBlock"/>
-                <module name="EmptyStatement"/>
-                <module name="MissingOverride"/>
-                <module name="MultipleVariableDeclarations"/>
-                <module name="ParameterAssignment"/>
-                <module name="StringLiteralEquality"/>
-                <module name="RedundantImport"/>
-                <module name="UnusedImports"/>
+                <module name="SuppressionCommentFilter" />
+                <module name="AvoidNestedBlocks" />
+                <module name="ConstantName" />
+                <module name="EmptyCatchBlock" />
+                <module name="EmptyStatement" />
+                <module name="MissingOverride" />
+                <module name="MultipleVariableDeclarations" />
+                <module name="ParameterAssignment" />
+                <module name="StringLiteralEquality" />
+                <module name="RedundantImport" />
+                <module name="UnusedImports" />
 
-                <module name="WhitespaceAfter"/>
+                <module name="WhitespaceAfter" />
 
-                <module name="NeedBraces"/>
-                <module name="UnnecessaryParentheses"/>
-                <module name="LeftCurly"/>
-                <module name="RightCurly"/>
+                <module name="NeedBraces" />
+                <module name="UnnecessaryParentheses" />
+                <module name="LeftCurly" />
+                <module name="RightCurly" />
 
-                <module name="SuppressWarningsHolder"/>
+                <module name="SuppressWarningsHolder" />
               </module>
             </module>
           </checkstyleRules>
@@ -185,13 +185,27 @@
           </excludes>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+        <version>3.4.0</version>
+        <executions>
+          <execution>
+            <id>attach-sources</id>
+            <goals>
+              <goal>jar-no-fork</goal>
+            </goals>
+            <phase>verify</phase>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>com.diffplug.spotless</groupId>
         <artifactId>spotless-maven-plugin</artifactId>
         <version>2.30.0</version>
         <configuration>
           <java>
-            <palantirJavaFormat/>
+            <palantirJavaFormat />
             <indent>
               <tabs>true</tabs>
               <spacesPerTab>2</spacesPerTab>