diff --git a/.github/workflows/build_workflow.yml b/.github/workflows/build_workflow.yml
index 3481f0b3..bdbaa8c2 100644
--- a/.github/workflows/build_workflow.yml
+++ b/.github/workflows/build_workflow.yml
@@ -55,7 +55,7 @@ jobs:
                 shell: bash -l {0}
         strategy:
             matrix:
-                python-version: ["3.9", "3.10", "3.11", "3.12"]
+                python-version: ["3.10", "3.11", "3.12"]
         steps:
             - uses: actions/checkout@v3