diff --git a/.github/workflows/buildChartOfedDriver.yaml b/.github/workflows/buildChartOfedDriver.yaml
index 8e4dd75..601cad9 100644
--- a/.github/workflows/buildChartOfedDriver.yaml
+++ b/.github/workflows/buildChartOfedDriver.yaml
@@ -24,7 +24,7 @@ on:
       ref:
         description: 'tag, sha, branch'
         required: true
-        default: v1.0.0
+        default: main
 
 permissions: write-all
 
diff --git a/.github/workflows/buildImageRdmaTools.yaml b/.github/workflows/buildImageRdmaTools.yaml
index 2d270dd..c91f1c4 100644
--- a/.github/workflows/buildImageRdmaTools.yaml
+++ b/.github/workflows/buildImageRdmaTools.yaml
@@ -24,9 +24,9 @@ on:
   workflow_dispatch:
     inputs:
       ref:
-        description: 'sha or Tag for code'
+        description: 'sha, branch or tag for code'
         required: true
-        default: network-tools-v1.0.0
+        default: main
       imageTag:
         description: 'image tag'
         required: true
diff --git a/rdma-tools/image/install-tools.sh b/rdma-tools/image/install-tools.sh
index a5c8ca9..b656ae2 100644
--- a/rdma-tools/image/install-tools.sh
+++ b/rdma-tools/image/install-tools.sh
@@ -41,6 +41,7 @@ apt-get install -y --no-install-recommends "${packages[@]}"
 # cuda
 wget --no-check-certificate https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2204/x86_64/cuda-keyring_1.1-1_all.deb
 dpkg -i cuda-keyring_1.1-1_all.deb
+apt-get install ca-certificates
 apt-get update
 # nvidia-smi
 apt-get install nvidia-utils-555