diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 774601a..4793247 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ '8' ]
+        java: [ '11' ]
         architecture: [ 'x64' ]
     name: Build with JDK ${{ matrix.java }} on ${{ matrix.architecture }}
     steps:
diff --git a/build.gradle b/build.gradle
index a964763..e0aa75f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -43,14 +43,14 @@ dependencies {
 }
 
 compileJava {
-    sourceCompatibility = 1.8
-    targetCompatibility = 1.8
+    sourceCompatibility = 11
+    targetCompatibility = 11
 }
 
 idea {
     project {
-        jdkName = 1.8
-        languageLevel = 1.8
+        jdkName = 11
+        languageLevel = 11
     }
 }