diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index d9b6d592..b46c0302 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -10,14 +10,14 @@ jobs:
     build:
       strategy:
         matrix:
-          os: ["ubuntu-18.04", "ubuntu-20.04", "ubuntu-22.04"]
+          os: ["ubuntu-20.04", "ubuntu-22.04"]
           python: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
       name: superflore tests
       runs-on: ${{matrix.os}}
       steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python ${{matrix.python}}
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v5
         with:
           python-version: ${{matrix.python}}
       - name: Install dependencies