diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..bbac1d3
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,37 @@
+name: Publish package to the Maven Central Repository
+on:
+  release:
+    types: [created]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set Version from Tag
+        run: echo "CI_RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+      - uses: actions/checkout@v2
+      - name: Set up JDK 8
+        uses: actions/setup-java@v2
+        with:
+          java-version: '8'
+          distribution: 'adopt'
+      - name: Cache Gradle packages
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Publish package
+        run: ./gradlew publish
+        env:
+          ORG_GRADLE_PROJECT_GPG_SIGNING_KEY: ${{ secrets.GPG_SIGNING_KEY }}
+          ORG_GRADLE_PROJECT_GPG_SIGNING_KEY_PASSWORD: ${{ secrets.GPG_SIGNING_KEY_PASSWORD }}
+          OSSRH_MAVEN_USERNAME: ${{ secrets.OSSRH_MAVEN_USERNAME }}
+          OSSRH_MAVEN_PASSWORD: ${{ secrets.OSSRH_MAVEN_PASSWORD }}
+      - name: Cleanup Gradle Cache
+        run: |
+          rm -f ~/.gradle/caches/modules-2/modules-2.lock
+          rm -f ~/.gradle/caches/modules-2/gc.properties
+
diff --git a/build.gradle b/build.gradle
index 5dddc53..59630bb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,9 +1,14 @@
 
-group 'org.example'
-version '1.0-SNAPSHOT'
+
 
 subprojects {
-//    sourceCompatibility = 1.8
-//    targetCompatibility = 1.8
+    def releaseVersion = System.getenv("CI_RELEASE_VERSION")
+    def runId = System.getenv("GITHUB_RUN_ID")
+
+    version = releaseVersion != null ? releaseVersion
+            : runId != null ? "build-${runId}-SNAPSHOT"
+            : "LOCAL-SNAPSHOT"
+
+    group 'de.fumix'
 }
 
diff --git a/lib/build.gradle b/lib/build.gradle
index 1c1a88d..6922ba6 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -4,22 +4,10 @@ plugins {
     id 'maven-publish'
 }
 
-group 'org.example'
-version '1.0-SNAPSHOT'
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
-task sourcesJar(type: Jar) {
-    classifier 'sources'
-    from sourceSets.main.allJava
-}
-task javadocJar(type: Jar) {
-    classifier 'javadoc'
-    from javadoc
-}
-
-
 repositories {
     mavenCentral()
 }
@@ -34,31 +22,73 @@ dependencies {
 
 }
 
-test {
-    useJUnitPlatform()
+java {
+    withJavadocJar()
+    withSourcesJar()
 }
 
-artifacts {
-    archives javadocJar, sourcesJar
+test {
+    useJUnitPlatform()
 }
 
 signing {
-    def signingKey = findProperty("GPG_SIGNING_KEY")
-    def signingPassword = findProperty("GPG_SIGNING_KEY_PASSWORD")
+    def signingKey = findProperty("GPG_SIGNING_KEY") // ORG_GRADLE_PROJECT_GPG_SIGNING_KEY -> ascii armored private PGP key
+    def signingPassword = findProperty("GPG_SIGNING_KEY_PASSWORD") // ORG_GRADLE_PROJECT_GPG_SIGNING_KEY_PASSWORD
     useInMemoryPgpKeys(signingKey, signingPassword)
 
     sign configurations.archives
 }
 
 publishing {
+    publications {
+        maven(MavenPublication) {
+            groupId = project.group
+            artifactId = "holidays"
+            version = project.version
+
+            from components.java
+
+            pom {
+                name = "holidays"
+                description = "Legal holidays, weekends, workdays by date (for Germany, but extendable)"
+                url = "https://github.com/fumiX/holidays"
+                licenses {
+                    license {
+                        name = 'The Apache License, Version 2.0'
+                        url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+                    }
+                }
+                developers {
+                    developer {
+                        id = 'michael-fuchs'
+                        name = 'Michael Fuchs'
+                        email = 'michael.fuchs@fumix.de'
+                    }
+                }
+                scm {
+                    connection = 'scm:git:https://github.com/fumix/holidays.git'
+                    developerConnection = 'scm:git:git@github.com:fumix/holidays.git'
+                    url = 'https://github.com/fumix/holidays'
+                }
+            }
+        }
+    }
+    // telling gradle to publish artifact to local directory (3)
     repositories {
         maven {
-            name = "OSSRH"
-            url = "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
-            credentials {
-                username = System.getenv("OSSRH_MAVEN_USERNAME")
-                password = System.getenv("OSSRH_MAVEN_PASSWORD")
-            }
+            url "file:/${project.projectDir}/build/artifacts"
         }
+//        maven {
+//            name = "OSSRH"
+//
+//            def releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
+//            def snapshotsRepoUrl = "https://s01.oss.sonatype.org/content/repositories/snapshots/"
+//            url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
+//
+//            credentials {
+//                username = System.getenv("OSSRH_MAVEN_USERNAME")
+//                password = System.getenv("OSSRH_MAVEN_PASSWORD")
+//            }
+//        }
     }
 }