diff --git a/.tekton/kn-plugin-func-func-util-115-pull-request.yaml b/.tekton/kn-plugin-func-func-util-115-pull-request.yaml
index 58ca70c9d..4a6dc907d 100755
--- a/.tekton/kn-plugin-func-func-util-115-pull-request.yaml
+++ b/.tekton/kn-plugin-func-func-util-115-pull-request.yaml
@@ -24,6 +24,8 @@ spec:
         - VERSION=1.35.0
         - GO_BUILDER=brew.registry.redhat.io/rh-osbs/openshift-golang-builder:rhel_8_golang_1.22
         - GO_RUNTIME=registry.access.redhat.com/ubi8/ubi-minimal
+        - JAVA_BUILDER=registry.access.redhat.com/ubi8/openjdk-21
+        - JAVA_RUNTIME=registry.access.redhat.com/ubi8/openjdk-21-runtime
     - name: git-url
       value: '{{source_url}}'
     - name: hermetic
diff --git a/.tekton/kn-plugin-func-func-util-115-push.yaml b/.tekton/kn-plugin-func-func-util-115-push.yaml
index 1a50a7c14..35db7e278 100755
--- a/.tekton/kn-plugin-func-func-util-115-push.yaml
+++ b/.tekton/kn-plugin-func-func-util-115-push.yaml
@@ -23,6 +23,8 @@ spec:
         - VERSION=1.35.0
         - GO_BUILDER=brew.registry.redhat.io/rh-osbs/openshift-golang-builder:rhel_8_golang_1.22
         - GO_RUNTIME=registry.access.redhat.com/ubi8/ubi-minimal
+        - JAVA_BUILDER=registry.access.redhat.com/ubi8/openjdk-21
+        - JAVA_RUNTIME=registry.access.redhat.com/ubi8/openjdk-21-runtime
     - name: git-url
       value: '{{source_url}}'
     - name: hermetic