diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 50f3234..6d9dae0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,10 +11,9 @@ jobs:
       - uses: actions/checkout@v1
         with:
           fetch-depth: 1
-      - name: Set up JDK
-        uses: actions/setup-java@v3
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
         with:
-          java-version: "17"
-          distribution: "temurin"
+          java-version: 1.8
       - name: Build with Gradle
         run: ./gradlew assemble build test
diff --git a/build.gradle.kts b/build.gradle.kts
index 6b1c83a..7320369 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     java
     antlr
-    kotlin("jvm") version "1.9.22"
+    kotlin("jvm") version "1.8.10"
     `maven-publish`
 }
 
@@ -39,7 +39,7 @@ tasks.test {
 }
 
 configure<JavaPluginExtension> {
-    sourceCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_1_8
 }
 
 publishing {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index d64cd49..41d9927 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a80b22c..00e33ed 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
-networkTimeout=10000
-validateDistributionUrl=true
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists