diff --git a/cave/src/store.rs b/cave/src/store.rs
index 38ea8c6..1da7d47 100644
--- a/cave/src/store.rs
+++ b/cave/src/store.rs
@@ -292,7 +292,7 @@ impl Store {
             if let Some(user_id) = &user_id {
                 // users by tag/hour
                 cmd.sadd(&user_key, &user_id).ignore()
-                    .expire(&user_key, TAG_EXPIRE as usize * 86400)
+                    .expire(&user_key, TAG_EXPIRE as usize * 3600)
                     .ignore();
             }
         };
@@ -335,7 +335,7 @@ impl Store {
                 let image_key = format!("i:{}", name);
                 cmd.sadd(&image_key, image)
                     .ignore()
-                    .expire(&image_key, TAG_EXPIRE as usize * 86400)
+                    .expire(&image_key, TAG_EXPIRE as usize * 3600)
                     .ignore()
                     .scard(&image_key);
                 image_keys.push(image_key);