diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c47becd70..fc82de687 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
     steps:
       # Checkout Repository
       - name: Checkout
@@ -13,11 +13,10 @@ jobs:
       # Install Tools
       - name: Install Tools
         run: |
-          sudo apt-get install wget build-essential python3
+          sudo apt-get install wget build-essential python3 ninja-build
           pip3 install setuptools
           pip3 install requests
           pip3 install pexpect
-          pîp3 install ninja
           pip3 install meson
 
       # Install (n)Migen / LiteX / Cores