diff --git a/packages/shared/database/src/migrations/002-create-tenant-schema-template.sql b/packages/shared/database/src/migrations/002-create-tenant-schema-template.sql
index 7348336..e8bb73f 100644
--- a/packages/shared/database/src/migrations/002-create-tenant-schema-template.sql
+++ b/packages/shared/database/src/migrations/002-create-tenant-schema-template.sql
@@ -339,6 +339,7 @@ CREATE TABLE conversation_messages (
     content           TEXT NOT NULL,
     tool_calls        JSONB,
     tool_results      JSONB,
+    attachments       JSONB,
     token_count       INTEGER,
     sequence_number   INTEGER NOT NULL,
     created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
diff --git a/packages/shared/database/src/migrations/004-add-conversation-messages.sql b/packages/shared/database/src/migrations/004-add-conversation-messages.sql
index 12d488f..1aff1d6 100644
--- a/packages/shared/database/src/migrations/004-add-conversation-messages.sql
+++ b/packages/shared/database/src/migrations/004-add-conversation-messages.sql
@@ -13,11 +13,15 @@ CREATE TABLE IF NOT EXISTS conversation_messages (
     content           TEXT NOT NULL,
     tool_calls        JSONB,
     tool_results      JSONB,
+    attachments       JSONB,
     token_count       INTEGER,
     sequence_number   INTEGER NOT NULL,
     created_at        TIMESTAMPTZ NOT NULL DEFAULT NOW()
 );
 
+-- Migration: Add attachments column to existing tables
+ALTER TABLE conversation_messages ADD COLUMN IF NOT EXISTS attachments JSONB;
+
 CREATE INDEX IF NOT EXISTS idx_conversation_messages_session
     ON conversation_messages(session_id, sequence_number ASC);
 CREATE INDEX IF NOT EXISTS idx_conversation_messages_session_recent