diff --git a/Cargo.toml b/Cargo.toml
index 722324f..c3e0825 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,4 +12,5 @@ teloxide = "0.10.1"
 tokio = { version =  "1.20.1", features = ["rt-multi-thread", "macros"] }
 log = "0.4.17"
 pretty_env_logger = "0.4.0"
-glob = "0.3.0"
\ No newline at end of file
+glob = "0.3.0"
+itertools = "0.10.2"
diff --git a/src/data/schema.rs b/src/data/schema.rs
index d258400..642f746 100644
--- a/src/data/schema.rs
+++ b/src/data/schema.rs
@@ -41,7 +41,7 @@ pub struct Card {
     /// Localized name of the card.
     name: String,
     /// Unique seven-character identifier of the card.
-    card_code: [char; 7],
+    card_code: String,
 
     /// List of keywords of this card, with their localized names.
     keywords: Vec<String>,