diff --git a/pyproject.toml b/pyproject.toml
index a5f3f0ed..07305676 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ dependencies = [
     "isort~=5.13, >=5.13.2",              # needed for bw-generate-cli
     "pydantic~=2.0",
     "pyqtgraph~=0.13",
-    "bec_qthemes~=0.0",
+    "bec_qthemes~=0.4, >=0.4.2",
     "qtconsole~=5.5, >=5.5.1",            # needed for jupyter console
     "qtpy~=2.4",
     "pyte",                               # needed for vt100 console