diff --git a/backend/schemas.py b/backend/schemas.py
index 20f55de..819c124 100644
--- a/backend/schemas.py
+++ b/backend/schemas.py
@@ -276,6 +276,22 @@ class RandomNumberOutcomeResponse(BaseModel):
     created_at: datetime
 
 
+# =============================================================================
+# Price History Schemas
+# =============================================================================
+
+
+class PriceHistoryResponse(BaseModel):
+    """Response model for a price history record."""
+
+    id: int
+    source: str
+    pair: str
+    price: float
+    timestamp: datetime
+    created_at: datetime
+
+
 # =============================================================================
 # Meta/Constants Schemas
 # =============================================================================