diff --git a/conda-store-server/conda_store_server/_internal/orm.py b/conda-store-server/conda_store_server/_internal/orm.py
index 2719c605d..bf5e767a7 100644
--- a/conda-store-server/conda_store_server/_internal/orm.py
+++ b/conda-store-server/conda_store_server/_internal/orm.py
@@ -786,7 +786,7 @@ class CondaPackageBuild(Base):
     channel_id: Mapped[int] = mapped_column(ForeignKey("conda_channel.id"))
     channel: Mapped["CondaChannel"] = relationship(CondaChannel)
 
-    build: Mapped[int] = mapped_column(Unicode(64), index=True)
+    build: Mapped[str] = mapped_column(Unicode(64), index=True)
     build_number: Mapped[int]
     constrains: Mapped[dict] = mapped_column(JSON)
     depends: Mapped[dict] = mapped_column(JSON)