diff --git a/.github/workflows/build-prs.yml b/.github/workflows/build-prs.yml
index 7169621..b62afa1 100644
--- a/.github/workflows/build-prs.yml
+++ b/.github/workflows/build-prs.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
-          java-version: 17
+          java-version: 21
           distribution: zulu
           cache: gradle
       - name: Grant execute permission for gradlew
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9c8ad91..000fa0e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
           uses: actions/setup-java@v3
           with:
             distribution: zulu
-            java-version: 17
+            java-version: 21
             cache: gradle
 
       -   name: Setup Gradle
diff --git a/.github/workflows/docs-branch.yml b/.github/workflows/docs-branch.yml
index 2064ae2..9a87f1d 100644
--- a/.github/workflows/docs-branch.yml
+++ b/.github/workflows/docs-branch.yml
@@ -24,7 +24,7 @@ jobs:
                   fetch-depth: 0
             - uses: actions/setup-java@v4
               with:
-                  java-version: 17
+                  java-version: 21
                   distribution: zulu
                   cache: gradle
             -   name: Build docs
diff --git a/.github/workflows/docs-pr.yml b/.github/workflows/docs-pr.yml
index 6c99245..8474e13 100644
--- a/.github/workflows/docs-pr.yml
+++ b/.github/workflows/docs-pr.yml
@@ -25,7 +25,7 @@ jobs:
                   fetch-depth: 0
             - uses: actions/setup-java@v4
               with:
-                java-version: 17
+                java-version: 21
                 distribution: zulu
                 cache: gradle
             -   name: Build docs
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 6b5161d..ed188f3 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -21,7 +21,7 @@ jobs:
                   fetch-depth: 0
             - uses: actions/setup-java@v4
               with:
-                  java-version: 17
+                  java-version: 21
                   distribution: zulu
                   cache: gradle
             -   name: Build docs