diff --git a/.github/workflows/ubuntu-latest-icc.yml b/.github/workflows/ubuntu-latest-icc.yml
index e11242f..e150ac9 100644
--- a/.github/workflows/ubuntu-latest-icc.yml
+++ b/.github/workflows/ubuntu-latest-icc.yml
@@ -26,6 +26,10 @@ jobs:
       run:
         shell: bash
 
+    env:
+      CXX: dpcpp
+      CXXFLAGS: -stdlib=libc++
+
     steps:
     - uses: actions/checkout@v2
 
diff --git a/script/ci_setup_icc.sh b/script/ci_setup_icc.sh
index d17d89b..83776a8 100755
--- a/script/ci_setup_icc.sh
+++ b/script/ci_setup_icc.sh
@@ -8,4 +8,6 @@
 LATEST_VERSION=$(ls -1 /opt/intel/oneapi/compiler/ | grep -v latest | sort | tail -1)
 # shellcheck source=/dev/null
 source /opt/intel/oneapi/compiler/"$LATEST_VERSION"/env/vars.sh
+dpcpp -v
 CXX=dpcpp
+echo $CXX