diff --git a/packages/openneuro-server/graphql/schema.js b/packages/openneuro-server/graphql/schema.js
index <HASH>..<HASH> 100644
--- a/packages/openneuro-server/graphql/schema.js
+++ b/packages/openneuro-server/graphql/schema.js
@@ -263,6 +263,8 @@ const typeDefs = `
     analytics: Analytic
     # Dataset README
     readme: String @cacheControl(maxAge: 31536000, scope: PUBLIC)
+    # The git hash associated with this snapshot
+    hexsha: String
   }
 
   # Contents of dataset_description.json
Add 'hexsha' field to Snapshot API