diff --git a/_ext/translation_graph.py b/_ext/translation_graph.py
index 2077faaf..7d2be501 100644
--- a/_ext/translation_graph.py
+++ b/_ext/translation_graph.py
@@ -146,6 +146,8 @@ def run(self):
         fig.update_layout(
             paper_bgcolor="rgba(0,0,0,0)",
             plot_bgcolor="rgba(0,0,0,0)",
+            hoverlabel_bgcolor="var(--bs-body-bg)",
+            hoverlabel_font_color="rgba(255, 255, 255, 1)",
             font_color="var(--bs-body-color)",
             margin=dict(l=40, r=40, t=40, b=40),
             xaxis_showgrid=False,