diff --git a/.github/workflows/build_bsd.yml b/.github/workflows/build_bsd.yml
index 20a37476..93117239 100644
--- a/.github/workflows/build_bsd.yml
+++ b/.github/workflows/build_bsd.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: [1.21.x]
+        go: [1.18.x]
         os: [macos-latest]
     runs-on: ${{ matrix.os}}
     steps:
@@ -33,7 +33,7 @@ jobs:
         run: |
           printf "$(go version)\n"
           printf "\n\ngo environment:\n\n"
-          go get -u github.com/lesismal/nbio/...
+          go get -u github.com/lesismal/nbio
           ulimit -n 30000
           go env
           echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT