diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1a1d6a69aade2d0ea26349dda1d21d15a23b5e18..32bddc873aecb7ae531181c7c938a27177766295 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -36,7 +36,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install wheel tox
+        pip install wheel coverage
 
     - name: Get Tahoe-LAFS master
       run: |