diff --git a/.github/workflows/create_jnispice.yml b/.github/workflows/create_jnispice.yml
index fd77d86be8..1913836653 100644
--- a/.github/workflows/create_jnispice.yml
+++ b/.github/workflows/create_jnispice.yml
@@ -77,7 +77,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
       - name: Download and Unpack JNISpice TAR
         run: |
           curl https://naif.jpl.nasa.gov/pub/naif/misc/JNISpice/PC_Linux_GCC_Java1.8_64bit/packages/JNISpice.tar.Z -o JNISpice.tar.Z
diff --git a/.github/workflows/deploy-to-gh-pages.yml b/.github/workflows/deploy-to-gh-pages.yml
index 0ed6e9b49a..9bc3eee449 100644
--- a/.github/workflows/deploy-to-gh-pages.yml
+++ b/.github/workflows/deploy-to-gh-pages.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: temurin
-          java-version: 19
+          java-version: "21"
       - uses: gradle/gradle-build-action@v2
       - name: Create Pages Build Directories
         run: mkdir -p build/javadoc/examples
diff --git a/.github/workflows/load-test.yml b/.github/workflows/load-test.yml
index e38a6987f7..16ee8ea6af 100644
--- a/.github/workflows/load-test.yml
+++ b/.github/workflows/load-test.yml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v1
       - name: Setup Gradle
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1377a3e711..5de7c1588a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -68,7 +68,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
 
       - name: Init Gradle cache
         uses: gradle/gradle-build-action@v2
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index f9f4f66441..4d565ff351 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -39,7 +39,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
       - name: Build
         run: |
           ./gradlew testClasses
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fc0b0e9efd..6ed29c790b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -30,7 +30,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v1
       - name: Setup Gradle
@@ -62,7 +62,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: "temurin"
-          java-version: "19"
+          java-version: "21"
       - name: Setup Postgres Client (psql)
         run: |
           sudo apt-get update