diff --git a/tools/cellxgene_census_builder/pyproject.toml b/tools/cellxgene_census_builder/pyproject.toml
index 3a562de3d..80582c881 100644
--- a/tools/cellxgene_census_builder/pyproject.toml
+++ b/tools/cellxgene_census_builder/pyproject.toml
@@ -34,7 +34,7 @@ dependencies= [
     # recent cellxgene-census _readers_ are able to read the results of a Census build (writer).
     # The compatibility matrix is defined here:
     #    https://github.com/TileDB-Inc/TileDB/blob/dev/format_spec/FORMAT_SPEC.md
-    "tiledbsoma @ git+https://github.com/single-cell-data/TileDB-SOMA.git@b1f7fd5#egg=tiledbsoma&subdirectory=apis/python/",
+    "tiledbsoma @ git+https://github.com/single-cell-data/TileDB-SOMA.git@a955277#egg=tiledbsoma&subdirectory=apis/python/",
     # TODO: Temporarily commenting out cellxgene-census package. Uncomment!!! 
     # "cellxgene-census==1.12.0",
     "cellxgene-ontology-guide==0.6.1",