diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1aa3d95..629e443 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
           - release-roswell
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: setenv
         run: |
           echo "$HOME/.roswell/bin" >> $GITHUB_PATH
@@ -37,7 +37,6 @@ jobs:
         env:
           LISP: sbcl-bin/2.0.0
         run: |
-          sudo apt-get -y install git build-essential automake libcurl4-openssl-dev
           curl -L https://raw.githubusercontent.com/roswell/roswell/master/scripts/install-for-ci.sh | sh
           ros install snmsts/sn.github roswell/sbcl_bin lake prove;lake-tools dump;