diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 371af10..4ad5b9c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [8, 11]
+        java: [11, 17]
         os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.gradle b/build.gradle
index 1ffc306..3a2ec16 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,8 +9,9 @@ version = '0.3.1-SNAPSHOT'
 
 mainClassName = 'com.glencoesoftware.ldaptool.Main'
 
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+compileJava {
+    options.release = 11
+}
 
 repositories {
     mavenCentral()