diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4ea5e76..791672a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python 2.7
@@ -27,7 +27,8 @@ jobs:
           strip_v: false
       - name: Generate binary
         run: |
-          pip install pyinstaller
+          pip install pyinstaller==3.3.1
+          pip install -e .
           pyinstaller --onefile -n sastre apply_pr/cli.py
       - name: Creating a realease/pre-release
         id: create_release