diff --git a/.github/workflows/ant.yml b/.github/workflows/ant.yml
deleted file mode 100644
index 49cd4ef..0000000
--- a/.github/workflows/ant.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: Java CI
-
-on: [push]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-    - name: Set up JDK 11
-      uses: actions/setup-java@v4
-      with:
-        distribution: temurin
-        java-version: 11
-    - name: Build with Ant
-      run: ant -noinput -buildfile build.xml dist
-    - name: Run tests
-      timeout-minutes: 10
-      run: ant -noinput -buildfile build.xml test
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
new file mode 100644
index 0000000..2793135
--- /dev/null
+++ b/.github/workflows/maven.yml
@@ -0,0 +1,21 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 11
+      - name: Build with Maven
+        run: mvn -B test-compile
+      - name: Run tests with Maven
+        timeout-minutes: 10
+        run: mvn -B test
diff --git a/README.md b/README.md
index e949099..e4fdade 100644
--- a/README.md
+++ b/README.md
@@ -14,11 +14,7 @@ This is the [cid](https://github.com/ipld/cid) implementation in Java.
 - [Usage](#usage)
 - [Dependency](#dependency)
 - [Testing](#testing)
-  - [Ant](#ant)
-  - [Maven](#maven)
 - [Building](#building)
-  - [Ant](#ant-1)
-  - [Maven](#maven-1)
 - [Releasing](#releasing)
 - [Maintainers](#maintainers)
 - [Contribute](#contribute)
@@ -30,14 +26,14 @@ Simply clone this repo.
 
 ## Usage
 
-```
+```java
 Cid cid = Cid.decode("zdpuAyvkgEDQm9TenwGkd5eNaosSxjgEYd8QatfPetgB1CdEZ");
 ```
 ## Dependency
 You can use this project by building the JAR file as specified below, or by using [JitPack](https://jitpack.io/#ipld/java-cid/) (also supporting Gradle, SBT, etc).
 
 for Maven, you can add the follwing sections to your POM.XML:
-```
+```xml
   <repositories>
     <repository>
         <id>jitpack.io</id>
@@ -56,22 +52,15 @@ for Maven, you can add the follwing sections to your POM.XML:
 
 ## Testing
 
-### Ant
-`ant test`
-
-### Maven
 `mvn test`
 
 ## Building
 
-### Ant
-`ant dist` will build a JAR file in the `./dist` suitable for manual inclusion in a project. Dependent libraries are included in `./dist/lib`.
-
-### Maven
 `mvn package` will build a JAR file with Maven dependency information.
 
 ## Releasing
-The version number is specified in `build.xml` and `pom.xml` and must be changed in both places in order to be accurately reflected in the JAR file manifest. A git tag must be added in the format "vx.x.x" for JitPack to work.
+
+The version number is specified in the `pom.xml` file and must be changed in order to be accurately reflected in the JAR file manifest. A git tag must be added in the format "vx.x.x" for JitPack to work.
 
 ## Maintainers
 
diff --git a/build.xml b/build.xml
deleted file mode 100644
index 2c04065..0000000
--- a/build.xml
+++ /dev/null
@@ -1,67 +0,0 @@
-<project name="java-cid" default="dist" basedir=".">
-  <description>
-    Java Content ID
-  </description>
-
-  <property name="src" location="src"/>
-  <property name="build" location="build"/>
-  <property name="dist" location="dist"/>
-
-  <path id="dep.runtime">
-    <fileset dir="./lib">
-        <include name="**/*.jar" />
-    </fileset>
-  </path>
-
-  <target name="init">
-    <mkdir dir="${build}"/>
-  </target>
-
-  <target name="compile" depends="init" description="compile the source">
-    <javac includeantruntime="false" srcdir="${src}" destdir="${build}" source="11" target="11" nowarn="true" debug="true" debuglevel="lines,vars,source">
-      <classpath>
-        <fileset dir="lib">
-          <include name="**/*.jar" />
-        </fileset>
-      </classpath>
-    </javac>
-  </target>
-
-  <target name="dist" depends="compile" description="generate the distribution">
-    <mkdir dir="${dist}/lib"/>
-    <copy todir="${dist}/lib">
-      <fileset dir="lib"/>
-    </copy>
-    <manifestclasspath property="manifest_cp" jarfile="myjar.jar">
-      <classpath refid="dep.runtime" />
-    </manifestclasspath>
-    <jar jarfile="${dist}/cid.jar" basedir="${build}">
-      <manifest>
-        <attribute name="Class-Path" value="${manifest_cp}"/>
-        <attribute name="Implementation-Vendor" value="io.ipfs"/>
-        <attribute name="Implementation-Title" value="cid"/>
-        <attribute name="Implementation-Version" value="1.3.7"/>
-      </manifest>
-    </jar>
-  </target>
-
-  <target name="test" depends="compile,dist">
-    <junit printsummary="yes" fork="true" haltonfailure="yes">
-      <jvmarg value="-Xmx1g"/>
-      <classpath>
-        <pathelement location="lib/junit-4.13.2.jar" />
-        <pathelement location="lib/hamcrest-2.2.jar" />
-        <pathelement location="dist/cid.jar" />
-      </classpath>
-      <test name="io.ipfs.cid.CidTest" haltonfailure="yes">
-	<formatter type="plain"/>
-	<formatter type="xml"/>
-      </test>
-    </junit>
-  </target>
-
-  <target name="clean" description="clean up">
-    <delete dir="${build}"/>
-    <delete dir="${dist}"/>
-  </target>
-</project>
diff --git a/lib/hamcrest-2.2.jar b/lib/hamcrest-2.2.jar
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