diff --git a/app/main.py b/app/main.py
index 8feb465..16e8a55 100644
--- a/app/main.py
+++ b/app/main.py
@@ -42,7 +42,8 @@ class GeoLocation(BaseModel):
 
 @app.post("/")
 async def root_post(ipaddresses: Annotated[list[IPAddressParam],
-                                    Body(title="The IPAddresses to geolocate")]
+                                    Body(title="The IPAddresses to geolocate")],
+                    response: Response
                ) -> list[GeoLocation]:
     '''
     Return GeoLocation item(s) for a list of IPAddressParam objects
@@ -72,6 +73,8 @@ async def root_post(ipaddresses: Annotated[list[IPAddressParam],
                     ip=ipaddress.ip
                     )
                 )
+    if geolocations:
+        response.headers['Cache-Control'] = 'private, max-age=604800'
     return geolocations
 
 
@@ -85,6 +88,7 @@ async def root_get(ipaddress: Annotated[Union[IPv4Address,IPv6Address],
     '''
     locations = await root_post([IPAddressParam(ip=ipaddress)])
     if locations:
+        response.headers['Cache-Control'] = 'private, max-age=604800'
         return locations.pop()
     response.status_code = status.HTTP_404_NOT_FOUND
     return GeoLocation()