diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index d5e367d..ac16f64 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        java: [ '8', '11', '17', '21', '22' ]
+        java: [ '8', '11', '17', '21', '23-ea' ]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/build.gradle b/build.gradle
index 47474ce..c5bb56c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -22,6 +22,11 @@ if (JavaVersion.current() <= JavaVersion.VERSION_22) {
   apply plugin: 'net.ltgt.errorprone'
 }
 
+// TODO: Java 23: remove this code block.
+if (JavaVersion.current() <= JavaVersion.VERSION_22) {
+  apply plugin: 'net.ltgt.errorprone'
+}
+
 repositories {
   mavenLocal()
   mavenCentral()