diff --git a/.github/workflows/future.yml b/.github/workflows/future.yml
deleted file mode 100644
index 0aaf939f..00000000
--- a/.github/workflows/future.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-name: Build
-
-on:
-  pull_request:
-    branches:
-      - 'future'
-    paths-ignore:
-      - '.gitignore'
-      - 'examples'
-      - 'README.md'
-
-jobs:
-  build:
-    name: ${{ matrix.os }}-${{ matrix.jdk }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ ubuntu-latest, windows-latest ]
-        jdk: [ 11, 17, 21 ]
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - uses: actions/cache@v1
-        with:
-          path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
-      - name: Set up JDK ${{ matrix.jdk }}
-        uses: actions/setup-java@v2
-        with:
-          java-version: ${{ matrix.jdk }}
-          distribution: 'adopt'
-          cache: maven
-      - name: Build and test
-        run: mvn clean install -DallTests -Pdist
-      - uses: actions/upload-artifact@v2
-        if: failure()
-        with:
-          name: surefire-reports
-          path: '**/surefire-reports/*.txt'
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fa96754e..cc8b7823 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, windows-latest ]
-        jdk: [ 11, 17, 21 ]
+        jdk: [ 17, 21 ]
     steps:
       - uses: actions/checkout@v2
         with:
@@ -52,7 +52,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v2
         with:
-          java-version: 11
+          java-version: 17
           distribution: 'adopt'
           cache: maven
       - name: Build and test
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 567572b7..0727451e 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
       - name: maven release ${{steps.metadata.outputs.current-version}}
         run: |
           java -version
diff --git a/pom.xml b/pom.xml
index 19343ad1..58debc4a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -518,10 +518,10 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>11</source>
-                    <target>11</target>
-                    <testSource>11</testSource>
-                    <testTarget>11</testTarget>
+                    <source>17</source>
+                    <target>17</target>
+                    <testSource>17</testSource>
+                    <testTarget>17</testTarget>
                 </configuration>
             </plugin>
             <plugin>