diff --git a/server/requirements.txt b/server/requirements.txt
index a568e9ee..e538353c 100644
--- a/server/requirements.txt
+++ b/server/requirements.txt
@@ -17,6 +17,6 @@ pandas>=0.24.2
 PyYAML>=5.3
 scipy>=1.3.0
 requests>=2.22.0
-tiledb>=0.5.3
+tiledb==0.5.9
 s3fs>=0.4.2
 gunicorn>=20.0.4