diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7f8d2afd..04ff0e3e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,6 +9,12 @@ on:
 defaults:
   run:
     shell: bash
+    BUILD_PYTHON_VERSION: "3.9.0"
+    MIN_PYTHON_VERSION: "3.9.0"
+    BUILD_OPENSSL_VERSION: "1.1.1h"
+    MIN_OPENSSL_VERSION: "1.1.1h"
+    PATCHELF_VERSION: "0.11"
+    PYINSTALLER_COMMIT: "5bc2c4620bfc5dde5a76a007c7ff50ee74223ca5"
 
 jobs:
   build: