diff --git a/rslib/src/decks/mod.rs b/rslib/src/decks/mod.rs
new file mode 100644
index 000000000..038698874
--- /dev/null
+++ b/rslib/src/decks/mod.rs
@@ -0,0 +1,27 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
+use crate::define_newtype;
+
+mod schema11;
+pub use schema11::Deck;
+
+define_newtype!(DeckID, i64);
+
+pub(crate) fn child_ids<'a>(decks: &'a [Deck], name: &str) -> impl Iterator<Item = DeckID> + 'a {
+    let prefix = format!("{}::", name.to_ascii_lowercase());
+    decks
+        .iter()
+        .filter(move |d| d.name().to_ascii_lowercase().starts_with(&prefix))
+        .map(|d| d.id())
+}
+
+pub(crate) fn get_deck(decks: &[Deck], id: DeckID) -> Option<&Deck> {
+    for d in decks {
+        if d.id() == id {
+            return Some(d);
+        }
+    }
+
+    None
+}
diff --git a/rslib/src/decks.rs b/rslib/src/decks/schema11.rs
similarity index 92%
rename from rslib/src/decks.rs
rename to rslib/src/decks/schema11.rs
index b066f7ef6..ee9608df6 100644
--- a/rslib/src/decks.rs
+++ b/rslib/src/decks/schema11.rs
@@ -1,8 +1,8 @@
 // Copyright: Ankitects Pty Ltd and contributors
 // License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
+use super::DeckID;
 use crate::{
-    define_newtype,
     serde::{default_on_invalid, deserialize_bool_from_anything, deserialize_number_from_string},
     timestamp::TimestampSecs,
     types::Usn,
@@ -12,8 +12,6 @@ use serde_json::Value;
 use serde_tuple::Serialize_tuple;
 use std::collections::HashMap;
 
-define_newtype!(DeckID, i64);
-
 #[derive(Serialize, PartialEq, Debug, Clone)]
 #[serde(untagged)]
 pub enum Deck {
@@ -218,21 +216,3 @@ impl Default for NormalDeck {
         }
     }
 }
-
-pub(crate) fn child_ids<'a>(decks: &'a [Deck], name: &str) -> impl Iterator<Item = DeckID> + 'a {
-    let prefix = format!("{}::", name.to_ascii_lowercase());
-    decks
-        .iter()
-        .filter(move |d| d.name().to_ascii_lowercase().starts_with(&prefix))
-        .map(|d| d.id())
-}
-
-pub(crate) fn get_deck(decks: &[Deck], id: DeckID) -> Option<&Deck> {
-    for d in decks {
-        if d.id() == id {
-            return Some(d);
-        }
-    }
-
-    None
-}