diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 8c82003..0885e65 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -43,7 +43,7 @@ jobs:
                 python-version: '3.10'
 
         -   name: Install flit
-            run: pip install flit~=3.8
+            run: pip install flit~=4.0
 
         -   name: Build with flit
             run: flit build