diff --git a/server/requirements.txt b/server/requirements.txt
index 1cd9a0e2..1cfdf7d5 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -24,3 +24,4 @@ tiledb>=0.5.9,>=0.6.2,!=0.7.2
 s3fs==0.4.2
 scanpy==1.4.6 # Until we move to anndata 0.7.4 scanpy needs to be pinned here
 sqlalchemy>=1.3.18
+umap-learn<0.5.0 # The pinned version scanpy is not compatible with latest umap-learn