diff --git a/.github/workflows/pr-build.yml b/.github/workflows/pr-build.yml
index 3f27e80f7..c7afe1c2c 100644
--- a/.github/workflows/pr-build.yml
+++ b/.github/workflows/pr-build.yml
@@ -4,7 +4,6 @@ on:
     branches:
       - master
       - main
-
 jobs:
   build:
     name: Build
@@ -16,6 +15,9 @@ jobs:
           - 8
           - 11
         # - 17 Until Java 6 is not targeted this won't work
+        java-distribution:
+          - adopt-openj9 # IBM?
+          - temurin # OpenJDK
     steps:
       - uses: actions/checkout@v2.4.0
         with:
@@ -24,15 +26,15 @@ jobs:
         uses: actions/setup-java@v2
         with:
           java-version: '${{ matrix.java-version }}'
-          distribution: 'temurin'
+          distribution: '${{ matrix.java-distribution }}'
       - name: Caching
         uses: actions/cache@v2
         with:
           path: ~/.m2
-          key: maven-${{ hashFiles('**/pom.xml') }}-${{ matrix.java-version }}
-      - name: Build ${{ matrix.java-version }}
+          key: maven-${{ hashFiles('**/pom.xml') }}-${{ matrix.java-version }}-${{ matrix.java-distribution }}
+      - name: Build
         run: |
           java -version
           ./mvnw clean install
-      - name: Build Java Doc ${{ matrix.java-version }}
+      - name: Build Java Doc
         run: ./mvnw javadoc:jar