diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1a474d3..e4068ce 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 ---
-image: gradle:jdk8
+image: gradle:jdk11
 
 include:
   # Run pipeline on main branch, merge requests, tags.
diff --git a/build.gradle b/build.gradle
index 21ba715..122873c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -51,7 +51,7 @@ distTar.compression = Compression.GZIP
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(8)
+        languageVersion = JavaLanguageVersion.of(11)
     }
 }