diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e6bcab6b..cb48df6d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,7 +13,7 @@ jobs:
       matrix:
         xcode_version: ["14.3.1", "15.0"]
     env: 
-      SWIFTTSC_MACOS_DEPLOYMENT_TARGET: "10.12"
+      SWIFTTSC_MACOS_DEPLOYMENT_TARGET: "12"
       DEVELOPER_DIR: "/Applications/Xcode_${{ matrix.xcode_version }}.app/Contents/Developer"
     runs-on: macos-13
     steps: