diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f7478a9b..2b4d272f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
       matrix:
         # Use these Java versions
         java: [
-          17    # Minimum supported by Minecraft
+          21    # Minimum supported by Minecraft
         ]
         # and run on both Linux and Windows
         os: [ubuntu-20.04, windows-latest]
@@ -32,7 +32,7 @@ jobs:
       - name: build
         run: ./gradlew build
       - name: capture build artifacts
-        if: ${{ runner.os == 'Linux' && matrix.java == '17' }} # Only upload artifacts built from latest java on one OS
+        if: ${{ runner.os == 'Linux' && matrix.java == '21' }} # Only upload artifacts built from latest java on one OS
         uses: actions/upload-artifact@v2
         with:
           name: Artifacts