diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7e85482..b5e1f97 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -17,16 +17,14 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        lisp: [sbcl-bin, ccl-bin/1.12.1, ecl/21.2.1]
+        lisp: [sbcl-bin, ccl-bin/1.12.2, ecl/23.9.9]
         os: [ubuntu-latest, windows-latest, macos-latest]
         quicklisp-dist:
           - quicklisp
           - ultralisp
         exclude:
           - os: windows-latest
-            lisp: ccl-bin/1.12.1
-          - os: windows-latest
-            lisp: ecl/21.2.1
+            lisp: ecl/23.9.9
     env:
       LISP: ${{ matrix.lisp }}
       QUICKLISP_DIST: ${{ matrix.quicklisp-dist }}