diff --git a/ci/templates/tox.ini b/ci/templates/tox.ini
index 6de9dd74..592d20e8 100644
--- a/ci/templates/tox.ini
+++ b/ci/templates/tox.ini
@@ -35,6 +35,7 @@ usedevelop =
     nocov: false
 deps =
     pytest
+    cover: coverage[toml]
     cover: pytest-cov
 commands =
     cover: python setup.py clean --all build_ext --force --inplace
diff --git a/tox.ini b/tox.ini
index 8d23e824..6976cdd5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -39,6 +39,7 @@ usedevelop =
     nocov: false
 deps =
     pytest
+    cover: coverage[toml]
     cover: pytest-cov
 commands =
     cover: python setup.py clean --all build_ext --force --inplace