diff --git a/requirements.txt b/requirements.txt
index 36fbe89..a4e6898 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ plotly==5.10.0
 pqdm==0.2.0
 scipy==1.9.1
 dill==0.3.5.1
-hdbscan==0.8.28
+hdbscan==0.8.27
 pandas==1.4.4
 umap_learn==0.5.3
 matplotlib==3.5.3