diff --git a/.github/workflows/build_lowest.yml b/.github/workflows/build_lowest.yml
new file mode 100644
index 0000000..65bc0b8
--- /dev/null
+++ b/.github/workflows/build_lowest.yml
@@ -0,0 +1,29 @@
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.commits[0].message, '[ci-skip]')"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: 'gradle'
+      - uses: gradle/actions/setup-gradle@v4
+      - name: Configure Git
+        run: git config --global user.email "no-reply@github.com" && git config --global user.name "Gitea Actions"
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Set paper version
+        run: |
+          sed -i "s/^paper_version = .*/paper_version = 1.20.6-R0.1-SNAPSHOT/" gradle.properties
+      - name: Build
+        run: ./gradlew shadowJar --no-daemon --stacktrace
+      - name: Rebuild on Failure
+        if: ${{ failure() }}
+        run: |
+          ./gradlew clean cleanCache
+          ./gradlew shadowJar --no-daemon --stacktrace 
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index f0ca767..4747cc7 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -79,7 +79,7 @@ jobs:
           version: ${{ env.VERSION }}
           changelog: ${{ github.event.release.body }}
           relations: Vebnzrzj:optional
-          game_versions: 1.21,1.21.1,1.21.2,1.21.3,1.21.4
+          game_versions: 1.20.6,1.21,1.21.1,1.21.2,1.21.3,1.21.4
           release_type: ${{ env.VERSION_TYPE }}
           loaders: paper,purpur
           featured: true
diff --git a/build.gradle.kts b/build.gradle.kts
index 12d36df..2e90b49 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -20,7 +20,7 @@ repositories {
 
 dependencies {
     // PaperMC API
-    compileOnly("io.papermc.paper:paper-api:1.21.4-R0.1-SNAPSHOT")
+    compileOnly("io.papermc.paper:paper-api:${project.property("paper_version")}")
 
     // Lombok
     implementation("org.projectlombok:lombok:1.18.36")
diff --git a/gradle.properties b/gradle.properties
index 9d9742d..c840964 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1,2 @@
-project_version = 0.0.0
\ No newline at end of file
+project_version = 0.0.0
+paper_version = 1.21.4-R0.1-SNAPSHOT
\ No newline at end of file