diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1b894063..ce0bba9b 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,9 +15,10 @@ jobs:
           - '3.11'
           - '3.12'
           - '3.13'
+          - '3.14'
         beancount:
           - '~= 2.3.6'
-          - '~= 3.0.0'
+          - '~= 3.0'
           - '@ git+https://github.com/beancount/beancount.git'
         exclude:
           - python: '3.8'
diff --git a/beanquery/sources/beancount.py b/beanquery/sources/beancount.py
index e388b6c6..9c6d50ad 100644
--- a/beanquery/sources/beancount.py
+++ b/beanquery/sources/beancount.py
@@ -513,10 +513,10 @@ def account(context):
         """The account of the posting."""
         return context.posting.account
 
-    @columns.register(set)
+    @columns.register(typing.Set[str])
     def other_accounts(context):
         """The list of other accounts in the transaction, excluding that of this posting."""
-        return sorted({posting.account for posting in context.entry.postings if posting is not context.posting})
+        return {posting.account for posting in context.entry.postings if posting is not context.posting}
 
     @columns.register(Decimal)
     def number(context):