diff --git a/.github/workflows/build-image.yml b/.github/workflows/build-image.yml
index ae8b2b6..78f5833 100644
--- a/.github/workflows/build-image.yml
+++ b/.github/workflows/build-image.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         python: ["3.10", "3.11", "3.12", "3.13"]
-        alpine: ["3.18", "3.19", "3.20", "3.21"]
+        alpine: ["3.18", "3.19", "3.20"]
         include:
           - python: "3.10.6"
             alpine: "3.16"