diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8133955..58a2908 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,8 @@ jobs:
 
     - name: Install build dependencies
       run: |
-        sudo apt-get install -y build-essential
+        sudo apt-get update
+        sudo apt-get install -y build-essential python3-dev libffi-dev
 
     - name: Install dependencies
       run: |