diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fe2f9314c..f22e42d37 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,6 +43,10 @@ jobs:
           curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.17.0/bin/linux/amd64/kubectl
           chmod +x ./kubectl
           sudo mv ./kubectl /usr/local/bin/kubectl
+          # install codespan schema checker
+          curl -fsSL -o codespan-schema-checker https://github.com/kmodules/codespan-schema-checker/releases/download/v0.0.1/codespan-schema-checker-linux-amd64
+          chmod +x codespan-schema-checker
+          sudo mv codespan-schema-checker /usr/local/bin/codespan-schema-checker
 
       - name: Run checks
         run: |
@@ -66,25 +70,25 @@ jobs:
 
       - name: Prepare cluster for testing
         id: local-path
-        env:
-          DOCKER_TOKEN: ${{ secrets.DOCKERHUB_TOKEN }}
-          USERNAME: 1gtm
-          REGISTRY_SECRET: regcred
         run: |
           echo "waiting for nodes to be ready ..."
           kubectl wait --for=condition=Ready nodes --all --timeout=5m
           kubectl get nodes
           echo
-          echo "create docker-registry secret"
-          kubectl create secret docker-registry ${REGISTRY_SECRET} --namespace=kube-system --docker-server=https://index.docker.io/v1/ --docker-username=${USERNAME} --docker-password=${DOCKER_TOKEN}
-
-      - name: Install CRDs
-        run: |
-          kubectl apply -f https://github.com/stashed/apimachinery/raw/master/crds/stash.appscode.com_functions.yaml
-          kubectl apply -f https://github.com/stashed/apimachinery/raw/master/crds/stash.appscode.com_tasks.yaml
+          echo "install helm 3"
+          curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
+          echo "install stash-crds chart"
+          helm repo add appscode https://charts.appscode.com/stable/
+          helm repo update
+          helm install stash-crds appscode/stash-crds
+          helm install kmodules-crds appscode/kmodules-crds
           kubectl wait --for=condition=NamesAccepted crds --all --timeout=5m
 
       - name: Test charts
         run: |
           export KUBECONFIG=$HOME/.kube/config
           make ct
+
+      - name: Check codespan schema
+        run: |
+          codespan-schema-checker --content=./docs