diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 50a4b63..9712ab7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,7 +2,7 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request: ~
   workflow_dispatch: ~
 
@@ -11,15 +11,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java_version: [ "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23" ]
+        java_version:
+          ['8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25']
     steps:
-      - uses: actions/checkout@v5
-      - name: Set up JDK for compilation
-        uses: actions/setup-java@v5
+      - uses: actions/checkout@v6
+      - uses: extractions/setup-just@v3
+      - uses: actions/setup-java@v5
         with:
-          distribution: "zulu"
-          java-version: "21" # Always use the most recent LTS JDK for building
-          cache: "maven"
+          distribution: 'zulu'
+          java-version: '25' # Always use the most recent LTS JDK for building
+          cache: 'maven'
       - name: Load Maven dependencies cache
         uses: actions/cache@v3
         with:
@@ -28,31 +29,31 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: Install dependencies
-        run: make install
+        run: just install
       - name: Compile
-        run: make build
+        run: just build
       - name: Set up Java ${{ matrix.java_version }}
         uses: actions/setup-java@v5
         with:
-          distribution: "zulu"
+          distribution: 'zulu'
           java-version: ${{ matrix.java_version }}
-          cache: "maven"
+          cache: 'maven'
       - name: Run test with Java ${{ matrix.java_version }}
-        run: make test
+        run: just test
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
-      - name: Set up JDK for compilation
-        uses: actions/setup-java@v5
+      - uses: actions/checkout@v6
+      - uses: extractions/setup-just@v3
+      - uses: actions/setup-java@v5
         with:
-          distribution: "zulu"
-          java-version: "21" # Always use the most recent LTS JDK for building
-          cache: "maven"
+          distribution: 'zulu'
+          java-version: '25' # Always use the most recent LTS JDK for building
+          cache: 'maven'
       - name: Install dependencies
-        run: make install
+        run: just install
       - name: Test coverage
-        run: make coverage
+        run: just coverage
       - name: Load Rust cache
         if: github.ref == 'refs/heads/main'
         uses: Swatinem/rust-cache@v2
@@ -67,20 +68,21 @@ jobs:
         uses: coverallsapp/github-action@master
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          path-to-lcov: "./coverage.lcov"
+          path-to-lcov: './coverage.lcov'
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
+      - uses: extractions/setup-just@v3
       - uses: actions/setup-java@v5
         with:
-          distribution: "zulu"
-          java-version: "21" # Always use the most recent LTS JDK for building
-          cache: "maven"
+          distribution: 'zulu'
+          java-version: '25' # Always use the most recent LTS JDK for building
+          cache: 'maven'
       - name: Install checkstyle and style guide
-        run: make install-checkstyle
+        run: just install-checkstyle
       - name: Lint
-        run: make lint
+        run: just lint
       - name: Upload Test results
         uses: actions/upload-artifact@master
         with:
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index dca7728..9d2e4fd 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -25,19 +25,17 @@ on:
 
 jobs:
   release:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-
-      - name: Install JDK
-        uses: actions/setup-java@v3
+      - uses: extractions/setup-just@v3
+      - uses: actions/setup-java@v5
         with:
-          distribution: "zulu"
-          java-version: "23" # Always use the latest JDK
-          server-id: "ossrh"
+          distribution: 'zulu'
+          java-version: '25' # Always use the most recent LTS JDK for building
+          server-id: 'ossrh'
           # define environmental variable names
           server-username: MAVEN_USERNAME
           server-password: MAVEN_CENTRAL_TOKEN
@@ -45,7 +43,7 @@ jobs:
           gpg-private-key: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
 
       - name: Clean, build and publish to Apache Maven Central
-        run: make install publish pass=${{ secrets.MAVEN_GPG_PASSPHRASE }}
+        run: just install publish pass=${{ secrets.MAVEN_GPG_PASSPHRASE }}
         env:
           MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
           MAVEN_CENTRAL_TOKEN: ${{ secrets.MAVEN_CENTRAL_TOKEN }}
@@ -54,5 +52,5 @@ jobs:
       - name: Upload output files to release
         uses: AButler/upload-release-assets@v3.0.1
         with:
-          files: "target/*.jar;target/*.pom;target/*.asc"
+          files: 'target/*.jar;target/*.pom;target/*.asc'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/Makefile b/Makefile
deleted file mode 100644
index df510db..0000000
--- a/Makefile
+++ /dev/null
@@ -1,52 +0,0 @@
-## help - Display help about make targets for this Makefile
-help:
-	@cat Makefile | grep '^## ' --color=never | cut -c4- | sed -e "`printf 's/ - /\t- /;'`" | column -s "`printf '\t'`" -t
-
-## build - Builds the project for development
-build:
-	mvn clean install -DskipTests=true -Dgpg.skip=true -Dcheckstyle.skip=true -Dcheckstyle.skip=true -Ddependency-check.skip=true -Djavadoc.skip=true
-
-## clean - Cleans the project
-clean:
-	mvn clean
-
-## coverage - Test the project and generate a coverage report
-coverage:
-	mvn --batch-mode install -Dgpg.skip=true -Dcheckstyle.skip=true -Dcheckstyle.skip=true -Ddependency-check.skip=true -Djavadoc.skip=true jacoco:report
-
-## install-checkstyle - Install CheckStyle
-install-checkstyle:
-	curl -LJs https://github.com/checkstyle/checkstyle/releases/download/checkstyle-10.3.1/checkstyle-10.3.1-all.jar -o checkstyle.jar
-	curl -LJs https://raw.githubusercontent.com/EasyPost/examples/refs/heads/master/style_guides/java/easypost_java_style.xml -o easypost_java_style.xml
-
-## install - Install requirements
-install: | install-checkstyle
-	git submodule init
-	git submodule update
-
-## lint - Check if project follows CheckStyle rules (must run install-checkstyle first)
-lint:
-	java -jar checkstyle.jar src -c easypost_java_style.xml -d
-
-## publish - Publish a release of the project
-# @parameters:
-# pass= - The GPG password to sign the release
-publish:
-	mvn clean deploy -Dgpg.passphrase=${pass}
-
-## publish-dry - Build the project as a dry run to publishing
-# @parameters:
-# pass= - The GPG password to sign the release
-publish-dry:
-	mvn clean install -Dgpg.passphrase=${pass}
-
-## release - Cuts a release for the project on GitHub (requires GitHub CLI)
-# tag = The associated tag title of the release
-release:
-	gh release create ${tag} target/*.jar target/*.asc target/*.pom
-
-## test - Test the project
-test:
-	mvn surefire:test
-
-.PHONY: help build clean coverage install-checkstyle install lint publish publish-dry release test
diff --git a/README.md b/README.md
index e3c6094..1482932 100644
--- a/README.md
+++ b/README.md
@@ -340,13 +340,13 @@ public class Example {
 
 ```bash
 # Build project
-mvn clean install -DskipTests -Dgpg.skip
+just install
 
 # Run tests
-mvn clean test -B
+just build test
 
 # Run tests with coverage
-mvn clean test -B jacoco:report
+just coverage
 ```
 
 ### Testing
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..00eb922
--- /dev/null
+++ b/justfile
@@ -0,0 +1,46 @@
+## Builds the project for development
+build:
+    mvn clean install -DskipTests=true -Dgpg.skip=true -Dcheckstyle.skip=true -Dcheckstyle.skip=true -Ddependency-check.skip=true -Djavadoc.skip=true
+
+## Cleans the project
+clean:
+    mvn clean
+
+## Test the project and generate a coverage report
+coverage:
+    mvn --batch-mode install -Dgpg.skip=true -Dcheckstyle.skip=true -Dcheckstyle.skip=true -Ddependency-check.skip=true -Djavadoc.skip=true jacoco:report
+
+## Install CheckStyle
+install-checkstyle:
+    curl -LJs https://github.com/checkstyle/checkstyle/releases/download/checkstyle-10.3.1/checkstyle-10.3.1-all.jar -o checkstyle.jar
+    curl -LJs https://raw.githubusercontent.com/EasyPost/examples/refs/heads/master/style_guides/java/easypost_java_style.xml -o easypost_java_style.xml
+
+## Install requirements
+install: install-checkstyle
+    git submodule init
+    git submodule update
+
+## Check if project follows CheckStyle rules (must run install-checkstyle first)
+lint:
+    java -jar checkstyle.jar src -c easypost_java_style.xml -d
+
+## Publish a release of the project
+# @parameters:
+# pass= - The GPG password to sign the release
+publish pass:
+    mvn clean deploy -Dgpg.passphrase={{pass}}
+
+## Build the project as a dry run to publishing
+# @parameters:
+# pass= - The GPG password to sign the release
+publish-dry pass:
+    mvn clean install -Dgpg.passphrase={{pass}}
+
+## Cuts a release for the project on GitHub (requires GitHub CLI)
+# tag = The associated tag title of the release
+release tag:
+    gh release create {{tag}} target/*.jar target/*.asc target/*.pom
+
+## Test the project
+test:
+    mvn surefire:test