diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index af13195a..26c124be 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -396,7 +396,7 @@ jobs:
       - name: Install PyInstaller
         if: matrix.goal == 'build'
         run: |
-          tmpd=$(mktemp -d -t my-script)
+          tmpd=$(mktemp -d -t pyinstaller-XXXX)
           cd $tmpd
           git clone https://github.com/pyinstaller/pyinstaller.git
           cd pyinstaller