diff --git a/.github/workflows/build_packages.yaml b/.github/workflows/build_packages.yaml
index c4d6b005b..24e173511 100644
--- a/.github/workflows/build_packages.yaml
+++ b/.github/workflows/build_packages.yaml
@@ -113,6 +113,8 @@ jobs:
         make ensure-rebar3
         copy rebar3 "${{ steps.install_erlang.outputs.erlpath }}\bin"
         ls "${{ steps.install_erlang.outputs.erlpath }}\bin"
+        head -2 rebar3
+        which rebar3
         rebar3 --help
         make ${{ matrix.profile }}
         mkdir -p _packages/${{ matrix.profile }}
diff --git a/scripts/ensure-rebar3.sh b/scripts/ensure-rebar3.sh
index 414e9113e..89058a298 100755
--- a/scripts/ensure-rebar3.sh
+++ b/scripts/ensure-rebar3.sh
@@ -25,6 +25,7 @@ version() {
     head -n 2 ./rebar3 | tail -n 1 | tr ' ' '\n' | grep -E '^.+-emqx-.+'
 }
 
+echo "OTP_VSN: ${OTP_VSN}"
 if version_gte "${OTP_VSN}" "24.0"; then
     ## rebar3 tag 3.18.0-emqx-1 is compiled using otp24.1.5.
     ## we have to use an otp24-compiled rebar3 because the defination of record #application{}
@@ -33,6 +34,7 @@ if version_gte "${OTP_VSN}" "24.0"; then
 fi
 
 if [ -f 'rebar3' ] && [ "$(version)" = "$VERSION" ]; then
+    echo "rebar3 ${VERSION} already exists"
     exit 0
 fi