diff --git a/internal/db/migrations/010_migrate_community_handles_to_singular.sql b/internal/db/migrations/010_migrate_community_handles_to_singular.sql
new file mode 100644
index 0000000..eb8c371
--- /dev/null
+++ b/internal/db/migrations/010_migrate_community_handles_to_singular.sql
@@ -0,0 +1,68 @@
+-- +goose Up
+-- +goose StatementBegin
+
+-- Migration: Rename community handles from .communities. to .community.
+-- This aligns with AT Protocol lexicon naming conventions (singular form)
+--
+-- Background:
+-- All atProto record types use singular form (app.bsky.feed.post, app.bsky.graph.follow)
+-- This migration updates existing community handles to follow the same pattern
+--
+-- Examples:
+--   gardening.communities.coves.social -> gardening.community.coves.social
+--   gaming.communities.coves.social -> gaming.community.coves.social
+--
+-- Safety: Uses REPLACE which only affects handles containing '.communities.'
+-- Rollback: Available via down migration below
+
+-- Update community handles in the communities table
+UPDATE communities
+SET handle = REPLACE(handle, '.communities.', '.community.')
+WHERE handle LIKE '%.communities.%';
+
+-- Verify the migration (optional - can be commented out in production)
+-- This will fail if any .communities. handles remain
+DO $$
+DECLARE
+    old_format_count INTEGER;
+BEGIN
+    SELECT COUNT(*) INTO old_format_count
+    FROM communities
+    WHERE handle LIKE '%.communities.%';
+
+    IF old_format_count > 0 THEN
+        RAISE EXCEPTION 'Migration incomplete: % communities still have .communities. format', old_format_count;
+    END IF;
+
+    RAISE NOTICE 'Migration successful: All community handles updated to .community. format';
+END $$;
+
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+
+-- Rollback: Revert handles from .community. back to .communities.
+-- Only use this if you need to rollback the naming convention change
+
+UPDATE communities
+SET handle = REPLACE(handle, '.community.', '.communities.')
+WHERE handle LIKE '%.community.%';
+
+-- Verify the rollback
+DO $$
+DECLARE
+    new_format_count INTEGER;
+BEGIN
+    SELECT COUNT(*) INTO new_format_count
+    FROM communities
+    WHERE handle LIKE '%.community.%';
+
+    IF new_format_count > 0 THEN
+        RAISE EXCEPTION 'Rollback incomplete: % communities still have .community. format', new_format_count;
+    END IF;
+
+    RAISE NOTICE 'Rollback successful: All community handles reverted to .communities. format';
+END $$;
+
+-- +goose StatementEnd