diff --git a/pyproject.toml b/pyproject.toml
index e2a0a08b82..1d3a16bedd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,6 +55,7 @@ dev = [
     "pandas-stubs",
     "pyarrow-stubs",
     "pydocstyle",
+    "PyQt5-sip<12.16.0",
     "pytest-cov",
     "pytest-mock",
     "pytest-runner",