1 files changed, 1 insertions, 0 deletions
diff --git a/debian/tests/control b/debian/tests/control
index 1a501fb..cae5627 100644
--- a/debian/tests/control
+++ b/debian/tests/control
@@ -14,6 +14,7 @@ Depends: cython3,
          python3-pytest,
          python3-setuptools,
          python3-sphinx,
+         python3-typing-extensions (>= 4.9),
          tex-gyre,
          texinfo,
          texlive-fonts-recommended,