diff --git a/tox.ini b/tox.ini
index 42a445e4..24bd8e22 100644
--- a/tox.ini
+++ b/tox.ini
@@ -27,6 +27,7 @@ deps =
     mosek >=10.0.40
     numpy >=1.15.4
     osqp >=0.6.2.post9
+    py{37,38,39,310}-{linux,macos}: piqp >=0.2.2
     py38-{linux,macos}: proxsuite >=0.2.9
     py{39,310}-linux: proxsuite >=0.2.9
     quadprog >=0.1.11