diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 31b560d..2a0f775 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -120,7 +120,6 @@ jobs:
     strategy:
       matrix:
         config:
-          - {os: ubuntu-18.04}
           - {os: ubuntu-20.04}
           - {os: ubuntu-22.04}